thanks to
BrettW from Sprintusers.com
Tethering - tested and works
1. Edit the following regestry entries. Hard part is finding a registry editor, but they are out there:
[HKEY_LOCAL_MACHINE\Comm\InternetSharing]
Extension="" Delete the "isext.dll" entry
[HKEY_LOCAL_MACHINE\Comm\InternetSharing\settings]
ForceCellConnection="Sprint"
[HKEY_LOCAL_MACHINE\Comm\InternetSharing]
MaxCMCon=0
2. Start the Internet Sharing application.
3. Hit Connect In the Internet Sharing application.
4. Connect the Diamond to the Laptop/PC via USB
5. Done. No other applications needs to run on the PC/Laptop.