What ever install 'package' that is checked-in to the repostory is stored under Program Files\McAfee\ePolicy Orchestrator\DB\Software\Current folder (or the ..\Software\Eval folder if you choose to check the package into the Evaluation branch).
This would usually be under a folder with the respective product codes (for e.g. VIRUSCAN8600 for VSE 8.5).
I got some useful information from others on how to prepare your own
registry key. I think this is the best way to go.