I think you have to build three different DLLs (i.e. 3 different projects in Visual Studio).
Anyway, these projects can be in the same Visual Studio solution and share the same code.
Create a first project (SheetSetProject_19 for example) referencing ACSMCOMPONENTS19Lib.....
I think you have to create some different projects and compile it to different locations.
Alternatively, you might be able to use late binding. probably more difficult though :|
You can now create shared projects what if I remember correctly basically the same thing as gile's example.
Here is an example can download...