C# Class Library - How do I make my class interop and registerable?

[C# Programming]

I have written a C# class which I wish to use in other projects. I have not been able to sift thru the MSDN or code sites to find an example of what I need to add to my code to enable it to be registered and added to a .net project as a reference. This class will be used by other programmers in there project and I do not wish to provide the source, I would rather provide a DLL for them to use.

Can anyone give me some guidance?