Unable to continue with the FEP 2010 installation

I am trying to implement FEP 2010 (Forefront Endpoint Protection 2010) but I received an error on doing it. The error states “Setup cannot continue with the System Center Configuration Manager Site Server.” I have confirmed that the account that I used when installing this is under the local admin group and the SMS Admins group is under Config Manager Server. I am trying to install this on Windows 2003 SP2. I am using SQL 2005 SP3. How can I resolve this?
