To install Virtual CRASH, you must have one of the following operating systems with Microsoft Internet Explorer 5.01 or later installed on your computer:
Microsoft Windows 98.
Microsoft Windows 98 Second Edition.
Microsoft Windows Millennium Edition (Windows Me).
Microsoft Windows NT 4 (Workstation or Server) with Service Pack 6a.
Microsoft Windows 2000 (Professional, Server, or Advanced Server) with the latest Windows service pack and critical updates available from the Microsoft Security Web site.