Question : Load Balance NICs for Server on WAN side of Router

I work for an on-site event photography company. Owner has a network of laptops that connect thru 16-port router to a "file server" laptop to view large image files.
Setup looks like this:

Server <----------->  16-port Router  <-----------> 13 Viewing Stations

- Router has two WAN ports designed for load balancing two internet connections
- Data flow is primarily unidirectional away from Server.
- Testing indicates best media settings are:
       Server NIC and WAN port set for 100 Full Duplex
       Stations NIC and LAN ports set for 100 Half Duplex
- All pertinent registry tweaks have already been applied for network performance.
- All computers running WinXP Pro
- All IP addresses are static
- (Router was needed instead of a Switch as a Legal workaround to 5/10 connection limit on WinXP Home/Pro)

This setup has given us No reliability problems. Now, onto the question...

My Question is how do I setup two NICs (1 integrated, 1 PC card) on the server to load balance using RandomAdapter algorithm enabled?
 - If only using TCP/IP (not WINS), does the SingleResponse Registry key need to be included with the RandomAdapter key?
 - Do NIC1 and NIC2 share same IP? Subnet?
 - Do WAN1 and WAN2 share same IP? Subnet?

 More practical setups are possible, but this is what I need to work with. So please, solutions only, no alternative setups.

Target Setup:
          File Server
        NIC1      NIC2
          |           |
          |           |
       WAN1    WAN2
              Router
      LAN1 thru LAN13
        |||||||||||||
        |||||||||||||
       Viewing Stations

Answer : Load Balance NICs for Server on WAN side of Router

Maybe what you can do is label the laptops with a green or red dot.  The greens are say 192.168.1.0/24 and the reds are 192.168.2.0/24.  Then, you can tell by looking at the laptop which network it's configured for.

Your diagram doesn't say anything about Internet connectivitiy - so I am assuming these "sets" and servers are all the same.  I see nothing wrong with doing it this way.

Or heck, you know what you could do - run 2 parallel networks - have 2 SOHO routers & enough switch ports for each segment.  Router A gives out network A addresses and gets plugged into Server NIC A.  Router B gives out Network B addresses and gets plugged into Server B.  Then, you configure all the laptops to receive an IP automatically.  You would make sure routing is NOT enabled on the server.  Then it wouldn't matter what the laptops are, they automatically get configured for the correct network.  

I don't know about the two NICs performance, I can't think it would make THAT much of a difference - but you could do some file transfer testing with large files, and test throughput and then add the appropriate number of hosts to each segment.

HTH