How to use the C# Class libary (dll) in Visual Basic 6.0

Question

Hi,

Basically i'm Visual Basic Developer. But now some other client need i used the C# for creating the class library. I want to use the C# class library (dll) in the visual basic program. Could you any one help me!
I have use the the "Resigter for COM Interop" option in project properties build dialog.  But this option does not work for me.