Hi,
Try this out!!!
-Go to control pannel-->administrative tools-->computer management-->System tools --> Device manager, then click on Modems, U will see icon with yellow mark, just right click on it then press uninstall.
- Now uninstall the driver which you hav install for ur modem.
-shutdown ur pc.
-Now, start it and before starting connect ur phone.
-now after starting pc, one dialog appears for found new hardware..
-just install ur compatible software for your modem, it displays one error for driver signing, in that dialog press "Continue anyway" instead of stop installation.
-it will now automatically put r-connect icon on ur desktop.
-now, ur pc is ready to surf!!
if still any problem is there, then feel free to contact.
regards,
Kevin