Worked on InsertHyperlink and AppendHyperlink.

Added unit tests.
Depreciated overloads which confussed API.
Its now possible to create one Hyperlink and insert it into the main document, headers and footers.

DocX/Paragraph.cs

             base.InsertPageBreakAfterSelf();
         }
 
+        [Obsolete("Instead use: InsertHyperlink(Hyperlink h, int index)")]
+        public Paragraph InsertHyperlink(int index, Hyperlink h) { return InsertHyperlink(h, index); }
+
         /// <summary>
         /// This function inserts a hyperlink into a Paragraph at a specified character index.
         /// </summary>
         /// This function was added by Brian Campbell aka chickendelicious on Jun 16 2010
         /// Thank you Brian.
         /// -->
-        public Paragraph InsertHyperlink(int index, Hyperlink h) 
-        { 
-            Run run = GetFirstRunEffectedByEdit(index); 
-            
-            if (run == null) 
+        public Paragraph InsertHyperlink(Hyperlink h, int index = 0) 
+        {
+            // Convert the path of this mainPart to its equilivant rels file path.
+            string path = mainPart.Uri.OriginalString.Replace("/word/", "");
+            Uri rels_path = new Uri("/word/_rels/" + path + ".rels", UriKind.Relative);
+
+            // Check to see if the rels file exists and create it if not.
+            if (!Document.package.PartExists(rels_path))
+                HelperFunctions.CreateRelsPackagePart(Document, rels_path);
+
+            // Check to see if a rel for this Picture exists, create it if not.
+            var Id = GetOrGenerateRel(h);
+
+            if (index == 0) 
                 return AppendHyperlink(h);
-            else 
-            { 
-                // The parent of this Run 
-                XElement parentElement = run.Xml.Parent; 
-                // Split this run at the point you want to insert 
-                XElement[] splitRun = Run.SplitRun(run, index); 
-                XElement link = h.Xml; 
-                
-                // Replace the origional run 
-                run.Xml.ReplaceWith( splitRun[0], link, splitRun[1] ); 
-            } 
+            else
+            {
+                // Get the first run effected by this Insert
+                Run run = GetFirstRunEffectedByEdit(index);
+
+                XElement h_xml;
+                if (run == null)
+                {
+                    // Add this hyperlink as the last element.
+                    Xml.Add(h.Xml);
+
+                    // Extract the picture back out of the DOM.
+                    h_xml = (XElement)Xml.LastNode;
+                }
+
+                else
+                {
+                    // Split this run at the point you want to insert
+                    XElement[] splitRun = Run.SplitRun(run, index);
+
+                    // Replace the origional run.
+                    run.Xml.ReplaceWith
+                    (
+                        splitRun[0],
+                        h.Xml,
+                        splitRun[1]
+                    );
+
+                    // Get the first run effected by this Insert
+                    run = GetFirstRunEffectedByEdit(index);
+
+                    // The picture has to be the next element, extract it back out of the DOM.
+                    h_xml = (XElement)run.Xml.NextNode;
+                }
+
+                h_xml.SetAttributeValue(DocX.r + "id", Id);
+            }
 
-            HelperFunctions.RenumberIDs(Document); 
-            
             return this; 
         }
 
         /// </example>
         public Paragraph AppendHyperlink(Hyperlink h)
         {
-            if(!h.hyperlink_rels.ContainsKey(mainPart))
-            {
-                PackageRelationship pr = mainPart.CreateRelationship(h.Uri, TargetMode.External, "http://schemas.openxmlformats.org/officeDocument/2006/relationships/hyperlink");
-                h.hyperlink_rels.Add(mainPart, pr);
-            }
+            // Convert the path of this mainPart to its equilivant rels file path.
+            string path = mainPart.Uri.OriginalString.Replace("/word/", "");
+            Uri rels_path = new Uri("/word/_rels/" + path + ".rels", UriKind.Relative);
+
+            // Check to see if the rels file exists and create it if not.
+            if (!Document.package.PartExists(rels_path))
+                HelperFunctions.CreateRelsPackagePart(Document, rels_path);
 
-            PackageRelationship rel = h.hyperlink_rels[mainPart];
-            Xml.Add(h.Xml);
-            Xml.Elements().Last().SetAttributeValue(DocX.r + "id", rel.Id);
+            // Check to see if a rel for this Picture exists, create it if not.
+            var Id = GetOrGenerateRel(h);
+
+            Xml.AddFirst(h.Xml);
+            Xml.Elements().First().SetAttributeValue(DocX.r + "id", Id);
 
             this.runs = Xml.Elements().Last().Elements(XName.Get("r", DocX.w.NamespaceName)).ToList();
 
             if (!Document.package.PartExists(rels_path))
                 HelperFunctions.CreateRelsPackagePart(Document, rels_path);
 
+            // Check to see if a rel for this Picture exists, create it if not.
+            var Id = GetOrGenerateRel(p);
+
+            // Add the Picture Xml to the end of the Paragragraph Xml.
+            Xml.AddFirst(p.Xml);
+
+            // Extract the attribute id from the Pictures Xml.
+            XAttribute a_id =
+            (
+                from e in Xml.Elements().First().Descendants()
+                where e.Name.LocalName.Equals("blip")
+                select e.Attribute(XName.Get("embed", "http://schemas.openxmlformats.org/officeDocument/2006/relationships"))
+            ).Single();
+
+            // Set its value to the Pictures relationships id.
+            a_id.SetValue(Id);
+
+            // For formatting such as .Bold()
+            this.runs = Xml.Elements(XName.Get("r", DocX.w.NamespaceName)).Reverse().Take(p.Xml.Elements(XName.Get("r", DocX.w.NamespaceName)).Count()).ToList();
+
+            return this;
+        }
+
+        internal string GetOrGenerateRel(Picture p)
+        {
             string image_uri_string = p.img.pr.TargetUri.OriginalString;
 
             // Search for a relationship with a TargetUri that points at this Image.
                 PackageRelationship pr = mainPart.CreateRelationship(p.img.pr.TargetUri, TargetMode.Internal, "http://schemas.openxmlformats.org/officeDocument/2006/relationships/image");
                 Id = pr.Id;
             }
+            return Id;
+        }
 
-            // Add the Picture Xml to the end of the Paragragraph Xml.
-            Xml.Add(p.Xml);
+        internal string GetOrGenerateRel(Hyperlink h)
+        {
+            string image_uri_string = h.Uri.OriginalString;
 
-            // Extract the attribute id from the Pictures Xml.
-            XAttribute a_id =
+            // Search for a relationship with a TargetUri that points at this Image.
+            var Id =
             (
-                from e in Xml.Elements().Last().Descendants()
-                where e.Name.LocalName.Equals("blip")
-                select e.Attribute(XName.Get("embed", "http://schemas.openxmlformats.org/officeDocument/2006/relationships"))
-            ).Single();
-
-            // Set its value to the Pictures relationships id.
-            a_id.SetValue(Id);
-
-            // For formatting such as .Bold()
-            this.runs = Xml.Elements(XName.Get("r", DocX.w.NamespaceName)).Reverse().Take(p.Xml.Elements(XName.Get("r", DocX.w.NamespaceName)).Count()).ToList();
+                from r in mainPart.GetRelationshipsByType("http://schemas.openxmlformats.org/officeDocument/2006/relationships/hyperlink")
+                where r.TargetUri.OriginalString == image_uri_string
+                select r.Id
+            ).SingleOrDefault();
 
-            return this;
+            // If such a relation dosen't exist, create one.
+            if (Id == null)
+            {
+                // Check to see if a relationship for this Picture exists and create it if not.
+                PackageRelationship pr = mainPart.CreateRelationship(h.Uri, TargetMode.External, "http://schemas.openxmlformats.org/officeDocument/2006/relationships/hyperlink");
+                Id = pr.Id;
+            }
+            return Id;
         }
 
         /// <summary>
             if (!Document.package.PartExists(rels_path))
                 HelperFunctions.CreateRelsPackagePart(Document, rels_path);
 
-            string image_uri_string = p.img.pr.TargetUri.OriginalString;
+            // Check to see if a rel for this Picture exists, create it if not.
+            var Id = GetOrGenerateRel(p);
 
-            // Search for a relationship with a TargetUri that points at this Image.
-            var Id =
-            (
-                from r in mainPart.GetRelationshipsByType("http://schemas.openxmlformats.org/officeDocument/2006/relationships/image")
-                where r.TargetUri.OriginalString == image_uri_string
-                select r.Id
-            ).SingleOrDefault();
-
-            // If such a relation dosen't exist, create one.
-            if (Id == null)
-            {
-                // Check to see if a relationship for this Picture exists and create it if not.
-                PackageRelationship pr = mainPart.CreateRelationship(p.img.pr.TargetUri, TargetMode.Internal, "http://schemas.openxmlformats.org/officeDocument/2006/relationships/image");
-                Id = pr.Id;
-            }
-
-            XAttribute a_id;
             if (index == 0)
-            {
-                // Add the Picture Xml to the start of the Paragragraph Xml.
-                Xml.AddFirst(p.Xml);
-
-                a_id =
-                (
-                    from e in Xml.Elements().First().Descendants()
-                    where e.Name.LocalName.Equals("blip")
-                    select e.Attribute(XName.Get("embed", "http://schemas.openxmlformats.org/officeDocument/2006/relationships"))
-                ).Single();
-            }
+                return AppendPicture(p);
 
             else
             {
                 }
 
                 // Extract the attribute id from the Pictures Xml.
-                a_id =
+                XAttribute a_id =
                 (
                     from e in p_xml.Descendants()
                     where e.Name.LocalName.Equals("blip")
                     select e.Attribute(XName.Get("embed", "http://schemas.openxmlformats.org/officeDocument/2006/relationships"))
                 ).Single();
-            }
 
-            // Set its value to the Pictures relationships id.
-            a_id.SetValue(Id);
+                // Set its value to the Pictures relationships id.
+                a_id.SetValue(Id);
+            }
 
             return this;
         }