I have several Iomega Zip drives (external) that cause printing problems. On machines that are hooked to our Netware 4.1 network ONLY. We can print from the printer once after bootup but it prints gibberish everytime we print after that. The problem goes away if I disconnect the Zip and hook the printer directly to the LPT port. The Zip drive has no problems at all (other than the printer pass through it seems.). Any suggestions?