Nokia N-Gage QD works without any modifications.

on the treo 650, can you tell me your settings?? gsm cdma? username, password, ap name???

My "generic" firmware v3 razr works just fine on T-mobile as well, though pairing is a total nightmare (and now that .51 added T-mobile VPN I can almost suffer thru the bugs ;-)).

Internet is fine as well, though the speed is like watching paint dry (and I'm pretty sure the v3 doesn't do edge)