Rush was great! Love their middle years stuff....
Lets bring this down to simple levels.....remove the Linksys adapter in Device Manager first......so the drivers are removed, then physically remove that adapter. Disable that second realtec NIC, either in BIOS, or in Device Manager, or in Network Connections...doesn't really matter which way you choose.
Now, just to make sure the tcp stack and/or winsock files aren't hosed with some malware, run this repair utility..
http://www.snapfiles.com/get/winsockxpfix.html
Now...you say you're joining a domain? If so, is DHCP running on the network? If so, how? Most importantly, what I'm getting at, is to make sure the workstation as your domain controllers IP address as its one and only DNS server. Not the router, and not the ISPs DNS servers.
If you're running just a peer to peer network, then the DNS is fine being the router or ISPs DNS servers.
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