I've tried port 6666, installing the latest drivers for my NIC, & moving my NIC up a PCI slot...nohing's done it yet. I did set my PC to not reboot upon error now so that I could see the error rather than have it reboot, & I saw a "DRIVER_IRQL_NOT_LESS_OR_EQUAL" error.

A link to what MS thinks the problem is can be found here:
http://support.microsoft.com/default.aspx?scid=kb;en-us;293077

Though I'm not sure how to solve that...I might just go buy a D-Link NIC to replace this Netgear FA311 & see if that helps, as I run all D-Link NIC's on my other PC's.