quick heal antivirusTo use Quick Heal AntiVirus, your computer must also meet following minimum Requirements:Operating System and Minimum System RequirementsWindows 2000 Professional, Windows 2000 Server and Windows 2000 Advanced Server300 MHz Pentium Processor (or compatible) or higher128 MB of RAMService Pack 3 or aboveWindows XP Home, Windows XP Professional and Windows XP 64-bit300 MHz Pentium Processor (or compatible) or higher128 MB of RAMService Pack 1 or aboveWindows Server 2003   read more »