GO SHOCKERS! Can you send me some Carlos O'Kelly's?
...there is a device that will allow you to connect that old hard drive to a new OS, and scrape the files off. It is a USB to SATA/IDE converter, about $30 US.
As for one monitor and two PC's, yes there is a Keyboard, video, and mouse adaptor but those things are about $90US.
Let me know if you need more guidance.