Systems requirements are IBM or compatible PC with a 166MHz processor, 16MB RAM, MS Windows 95/MS Windows 98/Windows NT 4.0 Service Pack 3 or higher. VGA 256-color or higher graphics adapter and monitor. Parallel port or sound card-enabled device supported by Windows 95, speaker(s) or headphones, and mouse. At this time PC Show and Tell does not support MAC computers or MAC software.