>I have created an AddIn class that holds the addin object and additional properties. Each addin will then be instantiated into the AddIn class which is then stored in a collection. Most of this is already in place and working.
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>I wrote the following code which dynamically loads a class from an external DLL. The GetModule method works fine and creates and stores an instance of the desired class.

>The problem is that I need to be able to set properties on the addin, and I'm unsure how to do all this. In the code below, the line where the database is being set won't compile.

What type is the oClass property? Object? You will need to cast oClass to the correct type or interface before accessing it's properties (so the compiler knows what type/interface is available).