Here are a couple of additional components that are need when running OMPM.
I installed OMPM on a Windows server 2008 R2 machine with SQL Server 2008 R2 Express.
Ran the OMPM File Scanner on a shared drive.
To create the SQL database you will need to install; Microsoft SQL Server 2005 Backward Compatibility Components
Also before importing the XML files you will need to install; Microsoft SQLXML 4.0 SP1
Running the Reports requires the 32-bit version of Access 2007 or Access 2010.