Custom Office Signatures

[Mbire]

Hi there, I have a requirement to add a custom signing object to a Microsft Word Document using .Net. The object should always manifest itself as a picture, i.e. wen u open or print the document, u see a picture in this case a signature. If an add-in that I have to develop is installed on the same machine, right clicking on the object should also show my custom menus in the popup menu. So my challenges are, how to create the custom object in .net (how can i extend the Image/Bitmap Class and add my own methods properties and evends) and how do I add this custom object and menu to Word? I appreciate any pointers in any direction that myt be helpful. Regards