OK. Another stupid question? How do you enable Com-Interopt?

I have not done anything more than a few simple apps with everything encapsulated into one .exe. None of the references I have say anything about this.

Right now, I can add my dll as a reference, but it will not see it when I do a create object command in my test program. All I get is an "Cannot create ActiveX component."

Microsoft's help has nothing helpful on How, only what which is normal for them.