PPCGeeks - HELP PLEASE!!! touch pro2

ok hello all..i am newb to pocket pcs...but i am computer savy...i have an htc touch pro 2 that was originally boxed from sprint....i got the phone from a friend who got a new droid and didnt want it...ok so the phone was already flashed with mighty rom and it was set up for metro pcs/ cricket services...the sim is unlocked...i place my tmobile sim card in it and i have been trying to set the network to a tmobile carrier but it searched and finds nothing!!!..i did soft resets....with sim in phone and set to gsm/utms...and still nothing cant find nothing....i just need to get set in the right direction to get my ...pro2 to work on my tmobile sim card.....i have tried the number of WU's out there and still no network being found....and when i restart the phone it says found multi-connection and shows t-mobile and some other brand tuyso mobile or somthing..i select t-mbolie and it configures and thats about it....i appreciate any help given...