Client access to a DLL in a webserver

Question

Hi,
i have a following situation..
I a C# dll and i have perfectly embedded it into a html page.Now when i run it in my system where i created the dll, i am able to view the usercontrol in my html page., whereas when i view in another system i am not able to see the usercontrol..I think i has got something to do the COm interop..
can some one help me out.

Yusuf