I'm also giving a trial run to a couple more goodies that you might like.
First I've got some USB-to-Serial cables that you can use with your JP1.2 cables, and I've got some PCI cards that you can use to add both a Parallel port *AND* a Serial port to your PC, so people with newer model PCs that don't have these legacy ports can still do JP1ing using the tried and trusted parallel and serial cables. Both are priced at $15. I've got 5 of each, but if they sell I'll get more.
Here's some pics.

