If you're interested in a parallel port interface, I have an old MOTU PC-Midi Flyer that i'm not using. It's been sitting in a drawer for the last few years, and although it used to work fine for me on a Windows 98 system, I can't verify that it works with XP. You might want to research that, and you'd probably have to download some drivers from MOTU or somewhere. However, it worked great when I did use it - it's a 2 in, 2 out interface with status leds to show midi activity. If you want it, I'll send it to you and include a parallel cable for $30, shipped.