If you bought some gps software yours might already be unlocked, but if you're like me and prefer free stuff like Google Maps this will unlock it for you.

Change registry value for the GPSLockWorkaround from 0 to 1 to enable the gps.

It can be found at:
HKEY_CURRENT_USER\ControlPanel\PhoneExtendFunction\CDMA\GPSLockWorkaround