[whitey10tc]

It's very possible, there are tutorials on cdmagurus.com and howardforums.com among others on howto flash this to cricket.

Take your time read through them posts and ask questions in the forums. Then once you think you can do it give it a try. The hard part on the Hero is working around crickets proxy. But talk and text are simply changing the SPC to six 0's using CDMA WS 2.7 then update the PRL using WS or QPST change the ESN on the account *2 to update and you have talk and text.
For Web, GPS, market, apps, mms. That's when the hard part comes in.