Need to copy file after setup O2K7. OCT maybe?

We are sending out Office 2007 using the OCT and SMS 2003. I have included
Office 07 SP2 to install at the same time. But one of our critical
applications cannot handle one of the new DLL’s included with office 2007.
To solve this, all we need to do is manually copy the ‘older’ DLL from O2K7
SP1, back and replace the new version.

Is it possible to include this process in the OCT or Config.xml file? We
will place this DLL on the network and whatever command/script etc, can pull
it from there. The only issue I can see is that copying a DLL to
Windows\System32 folder needs Admin permissions.

Can any of you folks think of something that will let me do this?