Endpoint Security Manager configuration?

Discontinued Products Endpoint Security Manager 2.0 Business Edition
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This is my first post, so I hope this is posted in the correct forum.
I am the admin for a (very) small business network which consists of:

Windows Small Business Server 2003 Premium (32 bit)

  • Windows Home Server 2011 (64 bit, used for backup, access to files from the internet and some web site hosting)
  • Four Windows XP Laptops

Comodo Endpoint Security Manager seems to answer my needs for administration of anti-virus components, but what would be the best configuration?
Would it be best to run CESM on the SBS or the WHS?
How does CESM cater for protection of the additional server.

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Software Requirements

CESM Central Service computer - the PC that will run the Endpoint Security Manager software

  1. Operating system
    Microsoft® Windows™ Server family:
    Windows 2003 Server (SP2 or higher) x86 and x64 editions
    Windows 2003 Small Business Server
    Windows 2003 Small Business Server R2
    Windows 2008 Server (SP2 or higher) x86 and x64 editions
    Windows 2008 Small Business Server
    Windows 2008 Server R2
  • or -
    Microsoft® Windows™ client family:
    Windows 7 x86 and x64 editions
    Windows XP (SP3 or higher) x86 and x64 editions
    Windows Vista (SP1 or higher) x86 and x64 editions
  1. Other supporting software (will be installed automatically if not present)
    Microsoft® .NET Framework 4.0
    Microsoft ReportViewer 2010 SP1
    Microsoft SQL Server Compact 4.0

CESM Administrative Console computer - the PC that will run the browser-based interface for configuring and managing the CESM Central Service (this computer may also be the Central Service PC)

  1. Operating system
    Microsoft® Windows™ server family:
    Windows 2003 Server (SP2 or higher) x86 and x64 editions
    Windows 2008 Server (SP2 or higher) x86 and x64 editions
    Windows 2008 Server R2
  • or -
    Microsoft® Windows™ client family:
    Windows XP (SP3 or higher) x86 and x64 editions
    Windows Vista (SP1 or higher) x86 and x64 editions
    Windows 7 x86 and x64 editions
  1. Browsers
    Microsoft Internet Explorer 7.0 or higher
    Mozilla Firefox 3.0 or higher
    Google Chrome 4.0 or higher
    Comodo Dragon 4.0 or higher
  2. Other supporting software (will be installed automatically if not present)
    Microsoft Silverlight 4.0
  3. Display
    Minimum 1024x600 Netbook display with browser set to full-screen at this resolution
    Minimum 1024x768 display with windowed browser
    Touch capable display interface and operating system (option)

CESM Agent computer - a managed PC that will run the Agent and Comodo Internet Security software

  1. Operating system
    Microsoft® Windows™ client family:
    Windows XP (SP3 or higher) x86 and x64 editions
    Windows Vista (SP1 or higher) x86 and x64 editions
    Windows 7 x86 and x64 editions

Here you have the ESM guide:
http://help.comodo.com/topic-84-1-285-3075-Introduction-to-Comodo-Endpoint-Security-Manager-–-Business-Edition.html

You can use on the server 2003 (on which you install the ESM service) the standalone version of Comodo Internet Security version 5.10