I just switched from the treo 680 to the att's Q9h myself last week. I was looking around since i don't use Outlook and found yahoo2go. Its pretty cool cuz u can sync it right from the app that is if you have a yahoo account. If u find anything else let me know
Actually, this turned out to be a very easy task. I just used bluetooth to send each category of contacts from the treo to the q.
Which brings up a gripe: is there any way to add categories (beyond the built-in 4 categories) to the Q? Any 3rd party contact managers that allow this?