CDMA support?

[pahick]

As i understand it, ever since 1.6 android has had native CDMA support, correct? Reason im asking is many people including myself have been after a "roam only" option to be added 3rd party and have been told it wasnt possible in 1.5 because that certain part wasnt added to the OS. Now that newer versions(1.6 on up) have CDMA support, does that mean the OS can now be manipulated to add a "roam only" option? I hope im explaining this correctly? Thank you.