What's the exact error you're getting?

Lots of things can go wrong, but the error message and number are more useful.

W7 has a different security setup than XP so that might account for registration issues, but if you can instantiate the object at all then that's not likely to be the problem.

+++ Rick ---

>I have an app that I installed on a W XP. It's got an exe and a dll.
>I published the component in Com+. All this in one single pc. And it works fine.
>I tried to do the same thing on a W 7 pc. And I can´t even get started. I keep getting an error messsage saying that it can´t find one of the methods of the dll.
>I'm not used to work with exe's and dll's, and I don´t what else to do.
>Is there any difference between WXP and W7?, and what should I do in order to get this working?