Well good luck with the anti-flame requests. Many answers are easily available...
You need GSM for the TP2 on T-Mobile. You will also need a GSM phone if you do not already have one. Flashing a CDMA ROM on a GSM phone can permanently damage the phone so be careful with this one. Better to ask if you are not 100% sure.
Most of the GSM ROMS are on XDA; another great forum.
Look here for answers about your new GSM phone.
http://forum.xda-developers.com/forumdisplay.php?f=479
Look in the ROM development section for the info you need. It will tell you how to flash your first rom and how to flash a new radio. To flash a new radio, you will need to have a Security Unlocked phone. This is available on XDA, but you have to pay for it, unlike flashing ROMS.
Best of luck.
Doug M.