>Thomas,
>
>I think (not sure) under NT it can be also installed with WinNT SP6(a). Do you've that SP applied?
>You can see shell32.DLL history and versions at http://support.microsoft.com/default.aspx?scid=http%3a%2f%2fsupport.microsoft.com%2fservicedesks%2ffileversion%2fdllinfo.asp&fp=1

Sergey,

I've seen instances where checking the registry for the "Shell.Application" object was present in HKEY_CLASSES_ROOT, but the version of shell32.dll didn't support it.