I came across this the other day and thought I was far too geeky to let pass.
This tool will let you turn your WiFi capable Windows Mobile device into a Wireless Router that routes to the phones Internet connection! Just like a portable wireless broadband router at home! 🙂
My mission now is to set it up on my WM6 HTC Tilt (8925) and get my Xbox to log into Xbox Live wirelessly via my 3G (HSDPA) internet connection on my phone 🙂 Geek kudos ++.