I ran into this on another forum.
1. Make sure your device’s data connection is turned on. See “Getting Started With Data Services” to learn
how to turn on the device’s data connection.
2. Connect the device to the computer using the provided USB cable.
3. Press Menu > Settings > Wireless controls.
4. Select the Mobile network sharing check box.
I tested it but I receive an error code 67: Registration Failure. Your PCS Vision username and/or password maybe in correct. Still reading to see if I can fix it.
Page 118 of the following link
http://member.america.htc.com/downlo...2009HeroUG.pdf