Cradlepoint PHS300 battery powered EVDO->wifi router should get you connected if you have an Sprint/Verizon EVDO plan and USB EVDO modem. You plug the modem into the PHS300 - there is no physical connection to the n800 so no drivers or port power issues. The n800 would just connect to the PHS300 wirelessly as a wifi access point.

Not available until Dec12 tho - right now you would have to use a Cradlepoint CTR 350 with an external battery.