I have the cab file which contains an OCX file, a DLL file, and a setup.inf file.
An example of the inf file would be
*; INF for whatever
[version]
signature="$CHICAGO$"
AdvancedINF=2.0
[Add.Code]
abc.ocx=abc.ocx
xxx.dll=xxx.dll
[abc.ocx]
file-win32-x86=thiscab
Clsid={X12AB12A-EE1E-312C-C123-0BC50DE7E01E}
RegisterServer=Yes
FileVersion=1,2,3,4
[xxx.dll]
file-win32-x86=thiscab
RegisterServer=No
FileVersion=1,2,3,4*
When I try to register either file I get the message that "DllRegisterServer" was not found in the files. I assume these are ActiveX controls for use within Internet Explorer, but the message seems otherwise.