Actually you can follow these steps to enable hotspot tethering
- from your phone, dial ##pst - Press Call
- click "edit mode"
- enter security code 000000
- scroll down to Security
- change the "S.IP DUN User Name" to "<your phone number>@vzw3g.com"
- hit back
- scroll down to "M.IP Default Profile"
- change "DUN NAI" to "<your phone number>@vzw3g.com"
- press menu, choose "Commit Modifications."
- The phone will power cycle.
I took that directly from
xda-developers