Hi
you can install SEPM on windows 7.
System requirement.
Symantec Endpoint Protection Manager system requirements
Processor
- 32-bit processor: 1-GHz Intel Pentium III or equivalent minimum (Intel Pentium 4 or equivalent recommended)
- 64-bit processor: 2-GHz Pentium 4 with x86-64 support or equivalent minimum
Note: Intel Itanium IA-64 and PowerPC processors are not supported.
Physical RAM
- 32-bit operating system: 1 GB of RAM or higher if required by the operating system
- 64-bit operating systems: 2 GB of RAM or higher if required by the operating system
Hard drive
- 4 GB or free space for the server, plus 4 GB for locally installed database
Display
Operating system
- Windows 7 (32-bit, 64-bit, RTM and SP1; all editions except Home)
- Windows XP Professional (32-bit, SP3 or later; 64-bit, all SPs)
- Windows Server 2003 (32-bit, 64-bit, R2, SP1 or later)
- Windows Small Business Server 2003 (32-bit)
- Windows Server 2008 (32-bit, 64-bit, R2, RTM, SP1, and SP2)
- Windows Small Business Server 2008 (64-bit)
- Windows Essential Business Server 2008 (64-bit)
- Windows Small Business Server 2011 (64-bit)
Note: Clients before version 12.1 can be managed by this version of the Symantec Endpoint Protection Manager, regardless of the client operating system.
Web browser
- Microsoft Internet Explorer 7, 8, or 9
- Mozilla Firefox 3.6 or 4.0
Database
The Symantec Endpoint Protection Manager includes an embedded database, and this is the only choice in Small Business Edition. In the Enterprise version, you may use the embedded database or one of the following versions of Microsoft SQL Server:
- SQL Server 2000, SP4 or later
- SQL Server 2005, SP2 or later
- SQL Server 2008 all Service Packs
- SQL Server 2008 R2 SP1
Note: If you install the Symantec Endpoint Protection Manager and the SQL database on the same computer, a minimum of 4 GB of RAM is recommended
http://www.symantec.com/business/support/index?page=content&id=TECH174720