This is the only way that I know it will work!
Windows XP: You must install Microsoft ActiveSync software first to get RNDIS driver in place for this to work!
Windows Vista or Windows 7: It is built into the Sync Center so no need to install anything.
With the above exception, the below steps will work for all flavor of Windows.
. First, connect your USB cable or pairing your Bluetooth first
. Second, start "File Explorer" from your ATT Tilt
. Click on Windows then scroll down look for "Internet Sharing"
. You will get the "Internet Sharing" screen prompt for "PC Connection", pick either USB or Bluetooth then "Connect"
. The above will cause Windows to create "Windows Mobile-based Internet Sharing Device". You can look in the device manager to see this! You can also see a network connection created in the network connections.
Oh! I forgot to mention that you need to start your browser or something to see if you can access internet resources!