Windows 2000 Server, Windows XP (32-bit, 64-bit), Windows Server 2003 (32-bit, 64-bit), Windows Server 2008 (32-bit, 64-bit), Windows Essential Business Server 2008 (64-bit) Title: 'System Requirements for Symantec Endpoint Protection Small Business Edition 12' Document ID: 2009040709581848 > Web URL: http://service1.symantec.com/support/ent-security.nsf/docid/2009040709581848?Open&seg=ent Title: 'SEP Small Business Edition 12.0 Quick Installation Guide' Document ID: 2009052614202348 > Web URL: http://service1.symantec.com/support/ent-security.nsf/docid/2009052614202348?Open&seg=ent