Rachel?!? since this is your fanclub, I have a question. What does your sig say? I can't read kanji last time I checked, lol.
im about 99.9 percent sure that it supports msn, I just installed the newest version of trillian about 2 days ago, talked to some ppl, and everything on msn. Check your version of trillian and edit your preferences and try to login. Remember kiddies, that tenth of a percent can prove me wrong, lolol. Don't believe me? I'll post a screenshot if you want,
Look at the attachment at the features list for Trillian 3.1. If you look, you'll see that it says msn messenger. Don't forget to maximize the screnshot within your browser, because IE automatically minimizes it to make it fit within the screen. You could also go to http://www.ceruleanstudios.com/features/ about half way down the screen since thats where I got the sc from in the first place.
@Tig: Why not just use Trillian, login to msn & aim, then you can talk to death if death can't figure it out.