I am having a really busy time at school now, being in the midst of starting to consolidate / analyze the results of the survey for my college project (212 complete responses within a week; 38 more before we hit the limit!) and stalling on creating a Thunderbird-themed one due to lack of time (will appreciate help).
I noticed that Gmail just activated their IMAP support, and here are their instructions for getting it to work on Thunderbird 2 (saw it on Slashdot). As it is currently being rolled out to all accounts, I guess some of us will have to wait till it has been completed.
Edit: The survey for my college project has been closed. Thank you all who have responded!