I dont see why the CDMA phone wouldnt work, but I would wait for someone who has a better understanding of this stuff... (Thats not me) but I know GSM wont work on the Sprint network. That said I am quite sure that the CDMA version would work, but again wait for a better oppinion
I would like the link to the site though if you could pm me.
FYI The Diamond smokes the PPC-6700 thats what I upgraded from