HTC Tilt 8925 / TyTN II

This is in regards to the tethering experts out there. I have never tried tethering a phone before because I was not aware it could be done. Apparently, the wireless modem in this phone will allow to tether it to your laptop to use the internet connection. I have a Windows Vista PC and have tried many different ways in trying to get this done. I know you do not need a certain data plan to get this done although you may pay a lot. I'm still trying to figure out why it's not working. Anyone had any luck tethering their 8925 to a Windows Vista PC?