First off, let me say that this forum has truly made my BB experience such that I will probably never go back to another phone (previous iPhone owner) again. Thanks all for the knowledge so far...
The good folks at at the link posted below (another BB-friendly forum) posted this solution to get Y! Messenger to work...and it actually did. Check it out yourselves, you will not be dissapointed! This was too good to keep under wraps, the instructions were clear and consice, and I would be remiss if I didn't pass on this opportunity to allow the good members of BBF the fun of using this app. Enjoy...
How to get Y! working for att users - BlueRoomSolution
Sorry folks...link updated