I called SBC for the 4th time... and it seems that there's some kind of problem with my motherboard or my ethernet card. I have an onboard Realtek TRL8139/810x Family Fast Ethernet NIC and a Cnet Pro200WL (which I can't find the driver for to install again).
I also have a D-Link wireless connected through USB.
Using the ipconfig command, I get a default gateway, IP address, etc, but I can't get to the web for some reason.
My best guess is that my PCI ethernet only works in a certain slot and that the onboard network connection is bad. Any bright ideas?