I have the same question regarding to two aspects of the product: Merge Modules and Setup Files.
As part of my dialog sequence, the user will need to specify where a database gets created on a remote SQL-Server. I want to be able to provide to them a list of drives on the server with available space on each, and then the "default" path (with option to change) for the DB on that drive.
To do this, I'll need to make sure MDAC 2.6 is installed (via Merge Module) and a custom DLL (via Setup Files).
The big question(s) then: Do these types of files get installed prior to the "OnFirstUIBefore()" event? If not, is there any way to force them to be installed early?