I have been reading the threads related to setting up Google Talk on the BB, including the sticky thread. I use AIM only. Can anyone advise which is the most reliable method for AIM and which server or transport, or whatever the right terminology is, to use? Thanks.

Jivetalk is the best. It's free.

Go to this link:
http://www.blackberryforums.com/afte...plication.html

Read the first post, EMAIL the poster and he will send you the link. You can use aim, gtalk, yahoo, msn. all at the same time or just aim alone.