How to configure an XP workstation with two NIC's as a multi-home with two network names.

The scnenario is a network with 25 XP Pro SP2 workstations and a couple of Windows 2003 servers, all connected through a single router.  The customer operates 24 hours a day, so there is no quiet time.

Each workstation must be backed up with a complete drive image twice a week.  To spread the load, each workstation has it's own backup date/time.  But whenever a workstation backup process is running, the network bandwidth takes a significant hit.  The load on the workstations remains low as they are each running a proprietary application in 'kiosk' mode that includes it's own web browser, and Outlook 2003 connected to an exchange server.  No other applications are running on the clients.

The customer is about to double the workstations, so we are considering introducing a second network for backup and maintenance traffic only.  Each workstation will receive a second NIC, connected to that network.

I haven't done this on a Windows box before, only unix, so my question is this:

1) Are there any special considerations or configuration items I need to know about?

2) Is it possible for an XP workstation to have two network names within the Network Explorer.  For example, say the Computer Name is "W-XYZ1" on the existing NIC, would it be possible to configure a second name "B-XYZ1" on the new NIC that will appear in the Network neighborhood of a server running on that same subnet?

3) Is it possible for the workstation to be in two domains, or even workgroups to facilitate this.

Any information on this subject will be appreciated.