DLL Parameter Types and parameter passing

Hey guys,

I've written external C++ DLL's successfully for SetupFactory to call in the past. That said, I'm having some problems passing numeric values, as OutputDebugString() is telling me. I need to pass a bunch of strings (which are working fine), an int and 3 DWORDS. The int and DWORDS are simply showing up blank and then the setup crashes. Is there a "recommended" type for numeric values being passed from SetupFactory to a function in an external DLL?

Thanks in advance!
DDoutelMS