friend you don't need to do anything i m writing complete procedure to do all things as follows:
1)first of all uninstall pc suite from your pc.
2)install bluetooth software cd then connect your bluethooth dongle pc and check is it working for general file sharing with your
nokia 7610 if yes then go ahead.
3) now go to control panel>> phone and modem options >>modems then select your modem it will looks like bluetooth DUN modem>>>
then click on properties>>>> then go to advanced>>>> in extra initialization commands fill it as im writing here
AT+CGDCONT=,"IP","airtelgprs.com" <cr> then click ok you done now go to network connections and create new connection in that
panel dialing no. will be *99***1# please note then try to connect with it i hope you will able to connect if any problem
arise please write here us.