I came across what looks like a really cool free piece of software for Windows Mobile devices (versions 5 and 6 work, I believe).
The software lets you use your WM device as a WIFI Access Point and then use the 3G connection to get on the Internet!
This is really cool if you need to setup an adhoc connection for a meeting!
Just make sure you have a decent data bundle and don’t break network rules about using devices as a modem…..
For more info see the links below: