Batboard

I have an Aten CS-1708 USB KVM switch that I am attempting to share between multiple computers. The switch has 8 VGA inputs and outputs to a single VGA console and 2 USB ports for the keyboard and mouse. I am wanting to control three computers from this switch, a main computer running Windows 7 with 3 Monitors, a programming computer running Windows XP, and a Server running Windows Home Server. I am basically only wanting to use the monitor switching for the programming computer and the server to share a monitor, with the main computer's monitors being independent.

Everything I have read online suggests that a KVM should work without the monitor cable being attached, however, I am finding that this KVM needs the monitor cable plugged in to function at the computer end, not just the USB cable. This presents a problem because the console end only supports one analog monitor, and I need to use three monitors with DVI input for the main computer.

Anyone had a similar issue like this? I am wondering if I can plug the monitor into the VGA plug on the motherboard of the main computer to gain the KM functionality while still using the DVI outputs of the video card for the monitors.

If you just want to share the keyboard and mouse, but not the displays, maybe Synergy will help? http://synergy-foss.org/

Thanks for the reply!

I have looked at synergy... it may work in a pinch, but I do really need to combine some of the displays. I am hoping that I can get it to work based on plugging the KVM cable into the motherboard of the main computer via VGA or DVI and running the actual monitors from the video card.