after doing new clean install of Windows XP, I get message that Network cable is unplugged. It's not unplugged, but no light comes on the back of the NIC showing a connection either. I've tried switching ports on the router, switching cables, switching to a different NIC, and plugging the NIC into a different slot in the computer. Still nothing. Windows recognizes the different NICs I install, but doesn't think any of them are getting plugged in to the router. Ideas?