I don't know if this will work with your equipment but the info may help...? I do know that you need a WIFI enabled device.
VirginMobile has a no contract wireless plan, BroadbandToGo. $150 for MIFI hotspot with up to five connections or a single USB device for $80.
$40 for service gives you unlimited (until 2/15/11), after 2/15/11 anything over 5GB, and speed will be slowed down. You can buy more and speed will be returned. You can buy the devices and TopUp cards at Wal-Mart and or add more to your plan online.
Can receive email in Outlook Express but cannot send through this service. You'll need to use something online for that.
Not as fast as cable or DSL but sure the heck beats dial-up. This is what I use for my daily internet connection.
(Hope it's ok to post this, if not, I'll keep an eye out and PM you the info.)