Please read:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vbcon98/html/vbconeverythingyouneedtoknowaboutversioncompatibility.asp

http://www.vbsight.com/BinaryComp.htm

http://www.codenotes.com/do/articles/article?articleID=496



>Thanks Eric .. its work now .. but could you explain to me, why should I and set the "Version Compatibility" to "Binary Compatibility"? .. thanks again
>
>
>Regards
>Winan