Palm Treo 750
Unlocked 750 questions
Palm has no plans of putting this phone out in TMO's up and coming 1700 umts, if it was me, I'd find the cheapest legit price and go with it. The phone has been out well over a year, and I'm sure one can be had for a decent price.
Do you know what those settings are. Tmobile could not set it up for me.
I don't know them, but if you're OK with and know the IRC, goto the efnet and #pocketpc there are people there who use WM phones (not the 750 but the settings are the same) and will be able to help you.