Can anyone tell me if a phone (Samsung i500) that is built for the sprint network and is the same frequency as Verizon’s network (CDMA 800/CDMA 1900) can be activated to work on the Verizon network?

I’d like an i500, but I need to be able to use it on Verizon. Yes, I know about the i600, but would prefer the i500.

Thanks.