Avast Pro Antivirus 2012

To run avast! Pro Antivirus, your PC must meet the following criteria:

Operating Systems Supported

• Windows 7 (any edition, 32-bit or 64-bit)
• Windows Vista (any edition, 32-bit or 64-bit, excl. Starter Edition)
• Windows XP Service Pack 2 or higher (any edition, 32-bit or 64-bit)
• Microsoft Windows 2000 Professional Service Pack 4 (only avast! Free Antivirus and avast! Pro Antivirus)

Minimum Hardware Requirements

• Pentium 3 Processor
• 128 MB RAM
• 250 MB of free hard disk space

Please note that some features are not supported on Win 2000: (Auto)Sandbox, FileRep, SafeZone, Remote Assistance, avast! Account.

Older Windows operating systems (Windows 95/98/ME/NT) are not supported

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Source: www.avast.com