is there a hack to disable the radio for good? I'm getting ready to upgrade the phone and will be using it for GPS, but dont want anything to try to log in into the net and charge me data once I completely downgrade the phone.

__________________
Sprint Mogul (PPC-6800) - dcd 3.0.1 ..... 3.35.04 ..... OliPro 2.40 ..... 60610 PRL
Sprint PPC-6600 - 2.07.00 WWE ..... HA00_166 (spare phone laying around)
Sprint PPC-6600 - 2.04.00 WWE ..... HA00_140 ..... 1.36.113 WWE (used for GPS only)

i would think just putting it in flight mode should be enough.