I converted my Touch Pro2 to Android 2.22 FRX07 (installation on SD card. ) and set up Wifi tethering. Took me 24 hours to do it but it works.
You do not lose your Windows 6.5 install. On power off / power on, it reboots into Windows.
Primary time consumers: getting the the SD card reformatted properly so the phone would read the Android install and figuring out that I had to manually input IP settings on Touch Pro and discovering what they were on the TP2.
Then time to setup the Android programs on the TP2.
If you want to go this route, PM me I can send you links.
Also, search Android Froyo 7 on TP2.