I have a PCTEL modem...HSP56. Drivers installed properly and I am able to conect to netzero without any problems. The problem is when I disconnect from netzero, the PC reboots. Any ideas? I am using Win 2K Pro as the O/S. I have not tried another provider to se if the problem persists. I feel it may be some setting that I am not aware of. Has anyone experienced this problem?