Create an addin using visual basic

dear all,i want to create a custom COM addin for lotus notes using VB. Is it possible? If so, which COM classes should i have to implement? After all, how can i deploy this?

Subject: You might start with this article

http://www-10.lotus.com/ldd/today.nsf/62f62847467a8f78052568a80055b380/27e234ca2b0b30798525684e00574a54?OpenDocument