Other than Windows O/S and some minimum RAM, OneRoof CyberCafePro 6.0 runs on almost any PC.

System Requirements for Main Control Station (MCS) "Server"

Processor: Pentium 3, Celeron 500 or later
RAM:
Windows 2000, 512 MB
Windows XP, 512 MB
Vista, 512 MB for Home Basic
Vista, 1 GB for Home Premium, Business, or Ultimate
Windows 7, 1 GB

32-Bit or 64-Bit Operating Systems Fully Supported!

Free Hard Drive Space: 500 MB
Monitor Resolution Minimum: 800x600

System Requirements for Client Computers

Processor: Pentium 3, Celeron 500 or later
RAM:
Windows 2000, 256 MB
Windows XP, 256 MB
Vista, 512 MB for Home Basic
Vista, 1 GB for Home Premium, Business, or Ultimate
Windows 7, 1 GB

32-Bit or 64-Bit Operating Systems Fully Supported!

Free Hard Drive Space: 500 MB
Monitor Resolution Minimum: 800x600

Client Computers (accessed by the public) may also have different Windows O/S connected to the Main Control Station (MCS) "Server" (i.e. mix of 2000, XP, Vista and Windows 7).

Note: More RAM is always better, as performance also depends on what applications are running at any given moment on your network. The RAM requirements outlined above are recommended minimums.