I want to capture video from one PC on a second PC...

An alternative would be to use a miniDV camcorder to record your actions on the primary PC.

You will need a PC or a notebook with an s-video port and a miniDV camcorder with a s-video port which is capable of capturing video. Not all miniDV camcorders have a s-video port that is capable of video in. Some s-video ports on camcorders are video out only.

Most modern graphics cards include an s-video port along with a VGA and a DVI port, or with two DVI ports. Usually, the s-video out on the graphics card is connected to an external monitor like a TV or flat panel. If you connect it to a miniDV camcorder instead, the miniDV camcorder can capture on a miniDV tape everything that is shown on the primary PC's screen including DVD movies, software in operation, and other actions.

Then, copy the minDV tape to a PC or make a DVD movie from it.

Or, if your secondary PC has a video capture card with an s-video port, you can do the same thing without the intervention of the camcorder. Note, not all video capture cards have s-video ports.