With Reference to my previous post "Call Me Stupid" I have now got a plugin working.
The only thing that I can say that I did was to start from the beging again.
Over the next couple of days when I get chance, I am going to convert my Ajax Tagger to the Windows Live Writer Framework. It should be a good experiment of create a Mashup of Web 2.0 API's into the Windows Live Writer Application.
Keep following me for updates.