Hello, Here are the relevant registry entries from a Windows 2000 SP4 system with all patches applied: 1. HKCR\CLSID\{854D7AC5-BC3D-11D0-B421-00A0C90F9DC4} - Default: "VsHelpServices Class" 2. HKCR\CLSID\{854D7AC5-BC3D-11D0-B421-00A0C90F9DC4}\InprocServer32 - Default: "D:\\Program Files\\Common Files\\Microsoft Shared\\vs98\\VSHELP.DLL" - ThreadingModel: "Apartment" 3. HKCR\CLSID\{854D7AC5-BC3D-11D0-B421-00A0C90F9DC4}\ProgID - Default: "VsHelpServices.1" 4. HKCR\CLSID\{854D7AC5-BC3D-11D0-B421-00A0C90F9DC4}\Programmable - Default: 5. HKCR\CLSID\{854D7AC5-BC3D-11D0-B421-00A0C90F9DC4}\VersionIndependentProgID - Default: "VsHelpServices" There are other entries which should exist as well - e.g. the CLSID {854D7ACA-BC3D-11D0-B421-00A0C90F9DC4}. I'm about to build a Wine installation to (try to) run Office 2000, so I'll post another message if I find the entries appearing.