Managed Computer Requirements
Client Computers
Windows 2000 Professional SP4
Windows XP SP2 (x86 or x64-based)
Windows Vista (x86 or x64-based)
Virtual clients with above operating systems
* To run System Center Essentials 2007 SP1 on Windows Server 2008, you must install the appropriate Windows Server 2008 hotfixes. For more information, see knowledge base article 953141.