I have installed winhlp32 and have made the registry changes recommended in this bulletin: http://support.microsoft.com/default.aspx/kb/917607I am using a standalone PC, not networked.However I stil get this message when I try to open a hlp file: 'Cannot display this Help file. Try opening the Help file again, and if you still get this message, copy the Help file to a different drive, and try again. (136)' It feels like it is something to do with file access settings but I cannot make anything work. Any ideas?Thanks.Alistair

Hi Alistair, you can try copying the file to another directory and then rename it then check if you can open it. Sean Zhu - MSFT