SC7 said:
It runs on any machine which has Xp or Vista installed. So all your Xp machines will run it.
not strictly true, it does have system requirments, its just that most systems will reach those requirements
Computer/Processor Computer with a 233MHz processor or higher (Pentium processor recommended)
Operating System Windows XP Service Pack 2 (SP2)
Windows XP Professional x64 Edition
Windows Server 2003 Service Pack 1 (SP1)
Memory For Internet Explorer 7 Beta 3:
Windows XP Service Pack 2 (SP2),
Windows XP Professional x64 Edition, and
Windows Server 2003 Service Pack 1 (SP1):
64 MB of RAM minimum
Full install size: 12 MB
Drive CD-ROM drive (if installation is done from a CD-ROM)
Display Super VGA (800 x 600) or higher-resolution monitor with 256 colors
Peripherals Modem or Internet connection; Microsoft Mouse, Microsoft IntelliMouse, or compatible pointing device