Help help changing my old Sprint galaxy s2 to cricket

[flirte38]

I hope someone can help me. I have an old galaxy s2 fromSprint. i sold it to my step daughter who had cricket service. cricket wants 65.,oo to change it over which i really can't afford. does anyone no how i can do this myself?
thanks Michelle

 

[Unforgiven]

I moved this to the Sprint S2/Epic 4G Touch forum where device owners can help you out.