HARDWARE System Requirements For the stand alone computer, the Operating System required is Windows 98 or Windows ME or Windows XP or Windows 2000 or Windows NT. For the network system, the Operating System can run on any NOS (Network Operating System). All computers must use either Intel Pentium II or Pentium III. Processor should be of 333 Megahertz. Minimum RAM required is 128 MB. Hard Disk free space required of 200 MB. The printer must use EPSON or compatible printers of 8.5" width dot matrix, HP Laser or DeskJet.