I recently purchased a Sony CD-writer Spressa USB. My PC is a PII 300 with Win98 2nd Edition. I have a Iomega Zip 100 off the parallel port. Windows Explorer will see the drive when I turn it on but then in a couple seconds the drive letter will disappear and Windows does not recognize it. I have to reboot and it does the same thing. I have looked for new drivers from Sony but no luck. I've called their tech support and they don't have a clue. Any thoughts?