You may want to post your code - the com server and the code you are using to instantiate it.

>Hello,
>
>I've got an .exe file which is a COM-Server. I've registered it with ... /regserver. Object Browser sees it, in Excel I can instantiate objects based on its classes without any further declarations.
>
>As soon as I try to CreateObject, I get the message "Class Definition ... is not found".
>
>It seems I just miss some knowledge about how it must be done...
>
>Can someone help?
>
>Thanks