Yay to Kay for hooking me up with the new BBM info.  It's so cool to hit people up and finally see a cute pic next to their name.  In a nutshell, the upgrade is just like AOL Aim, but again, it's an UPRGRADE!. Here's the thing, just make sure you download the link for your specific BlackBerry.  I've had two people lose their Messenger altogether because they DL'd the wrong link, so be careful.  I'm sure after all of the bugs are dealt with it will be a smoother process.