I've made and used my own parallel cable for my ti83 for a long time.. The only problem is that I can only get it to work from true dos on my computer (not in Win95 or 98..) What's causing this? I have a zip drive, scanner, and printer hooked into the port.. Could one of these (meaning zip or scanner) be in the way or intercepting the data? Any suggestions? Thanks.. Daniel wakkow@flash.net