AWESOME FIX TO GET BT WORKING AS MODEM AGAIN on the FUZE...
I couldn't get my laptop to use the Fuze as a Bluetooth Modem in the same way as my 8125 so I turned on the Internet Connection Sharing on the Fuze by the deleting the registry key discussed below (requires a soft reset afterwards). I preferred the convenience of simply opening a webpage on my laptop and it automatically wirelessly using my phone as an actual Bluetooth Modem but the more cumbersome Internet Sharing Connection method download speeds seem to be much faster. Using http://www.speedtest.net
as a benchmark connecting my laptop and my Fuze via Bluetooth PAN gives me 600-700 Kbps while connecting the Fuze directly to the laptop using USB gives me 1200-1300 Kbps.
This works with standard $15/month Sprint PCS Vision plan.
No you do not need to purchase Phone As Modem plan.
No they will not charge you extra because there's no way for them to known you tethering to a pc.
I have two Touch Diamonds (not Pro's).
One for my wife and one for me.
My Internet sharing (Start\Programs\Internet sharing) only has one drop down menu, "PC Connection".
My wife's has two drop downs "PC Connection" AND "Network connection".
Now I bought her's two days after mine at the same Sprint store.
Her Internet connection shares Internet via USB connected directly to a PC without issue.
Mine doesn't since I have not been able to set the missing "Network connection" drop down menu option to the appropriate setting of "Sprint". Instead it either say Waiting for network or error 67 invalid username and password (something like that)
I deleted the key: (not just the value)
Now I got the second drop down menu "Network connection", restarted the phone and now it works like a champ.