noob question

[fast66bug]

i got a sprint htc tp2 awhile back thinking i was going for sprint change of plans i ended up getting verizon the phone sat while i used a blackberry. now im tired of the bb and would like to use a tp2 what can i do to turn this sprint tp2 to a verizon tps just standard os nothing fancey except that cant press the power when the keyboard is open thank you and i hope you can point me in the right direction