?¿ Flash a Sprint HTC TP (flashed to revol) back to sprint

[omenovi]

hey, I need some help, probably you'll tell me that i'm posting something wich there are a thousand answers or topics already, but I'll give it a try...

My problem is I bought an HTC Touch Pro (CDMA,Sprint) wich was flashed to the "revol" carrier, but I have sprint, and when I took it to the sprint store they say they don't flash phones, neither do revol can flash it back again...

So my question is, how can I somehow flash it to sprint again? what do I need? Would there be a place to do it? Is there software to do it myself? Is there a guide? I know it probably has something to do with overwriting "PRL file" or firmware or something...

I barely learned how to unlock it and change roms...
I also started reading about getSPC, CDMA Workshop... but have no idea what to do.

Any help would be apreciated, thnx