To complete the double computing system see also the DOUBLE MOUSE tutorial.
Step 1: MATERIALS / PARTS LIST
Vendor: Radio Shack
Cost: $14.99 or less
Notes: You only really need one keyboard but you need two serial cables. I ended up just buying an extra keyvoard because at RadioShack they are cheaper then a serial cable. Any old keyboard will do, both USB or PS/2 will work, check ebay.com. This example uses a USB keyboard, PS/2 keyboards will also work see the DOUBLE MOUSE post.
Part: QVS USB-PS2Y USB to Dual PS/2 "Y" Converter
Notes: You are going to need two of these. There are cheaper options but this is the only one that I know works for sure.
Part: Duct tape
Vendor: Any will do.
Tools: A sharp Xacto blade and/or wire cutters.