I'm using a Sprint Treo 600 and I've noticed something interesting. On my Sanyo 5300 if I go to the home page, select Messaging, then Instant Messaging I get three links: 1 - AOL Instant Messenger, 2 - MSN Messenger, 3 - Yahoo! Messenger. However, if I do the exact same thing from my Treo 600 I get 1 - AOL Instant Messenger and 2 - Yahoo! Messenger. Am I missing a software upgrade on my brand new Treo 600? (I also notice I'm at PRL 10020 so I know I'm one PRL back).