Since cdma and gsm operate on the same frqencie range it should be possible through software to convert to gsm?

Lets say i have a droid with CDMA radio since it's running android and therefore is open source software mod s are no problem at all. And beacause CDMA and GSM have the same frequinecies should it be posible to convert it to gsm right and how??? PLEASE ANSWER EITHER UNDER OR ON JOHNY@KRAHBICHLER.COM AND CHECK OUT WWW.GADGETZZ.COM