Some of the servers we run at work have 3 NICs. While I know windows 2003 can make all 3 NICs look like one, we are running only Windows 2000 server. It's on an older DELL server, so there is no third party stuff installed that allows you to "team" up the NICs.
We do have 2 VLANs at work though. Would it be wise to put one NIC in one vlan, and the other NIC in the other? Figured it would be faster for users on VLAN2 if they didnt have to cross a layer 3 device to access the server.