I finally got a setup at work which I’m really satisfied with. The short version:

• 3 24-inch monitors (HP LA2405wg with two Display Ports)
• Desktop computer (HP Z600) 2.26gHz with 6 GB RAM running Windows 7 x64 - using 2 of 3 screens
• Laptop (nothing exciting - HP Compaq 6910p with Win 7 x64 – for mobility) – using the 3rd screen
• Synergy to share a single mouse and keyboard between desktop computer and laptop

(the two screens on the left is the desktop computer, the one on the right is the laptop. Couldn’t take a picture further away because I have a wall just behind me )

What’s really nice about this setup is that I don’t really notice I have two computers running, because of the way Synergy “abstract” the other computer away.

Setting up Synergy (the long version)

1. Install Synergy on both computers
2. Setup the computer that’s connected to the mouse/keyboard as “server”
   1. Select “Share this computer’s keyboard and mouse (server)”
   2. Click Configure…
   3. Under Screens click + to add a new screen (actually it’s a computer you’re adding and not a screen)
   4. Set the Screen Name to the name of your computer (yes, it has to be the hostname of your computer in order for Synergy to communicate with other clients) and click OK
   5. Do the same for the other computers (the clients)
   6. Under links you set how the screens are in relation to each other (based on my screen setup above):
      1. Highlight your “server” under Screens
      2. Under Links ([New Link]) enter:
         0 to 100 % of the left of YOUR_CLIENT goes to 0 to 100 % of YOUR_SERVER
      3. Click +
      4. 0 to 100 % of the right of YOUR_SERVER goes to 0 to 100 % of YOUR_CLIENT
      5. Note: Synergy does not implicitly understand that if server is left of client, the client is right of server, so you need to define that explicitly, hence #4
      6. Click OK
      7. Click Start (consider setting up AutoStart)
         
         On my server it looks like this: 
         
3. Setup the client
   1. On the client computer select “Use another computer’s shared keyboard and mouse (client)
   2. Enter the name of YOUR_SERVER
   3. Click Start (consider setting up AutoStart)
4. That’s it. Test by moving your mouse from the left most monitor to the right most monitor! Cool!