Some DLL methods doesnt work with Windows 2003

Hi all;
I know it is not clear question but i have to ask.
I have downloaded a component called AdvIMAP4.dll and registered via remote desktop. I give the permissions to run the dll. It perfectly works on windows X but it never works on windows 2003. I have tried it with two 2003 boxes but no chance.
I can create object, there is no error.
But when I try to call
Set Result = Imap4.List()
It gives error, I know it can be component specific solutions but if you have any suggestion please let me know. Why a dll don’t work at Windows Server 2003 Web Edition with ISS 6.0.

All comment and suggestions are welcome
Ps: I have asked the specific question to manufacturer’s forum but didn’t get any answer, so I want to try my chance here

Thank you

 

 

 

 

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