This is related to my post about .chm where vitamin set me on the right path. http://forum.winehq.org/viewtopic.php?t=1026 Since then I reinstalled Ubuntu 8.04 and wine. While perusing the virgin registry I noticed the chm.file ...command key was: C:\windows\system32\hh.exe %1 There is no hh.exe located in that directory. The hh.exe file is located in the C:\windows\ directory. If wine uses the registry how does it find hh.exe? I have a windows program whose help file is in chm format. It appears this program calls hh.exe directly rather than use a ShellExecute to display it's help file. I thought possibly I could replace hh.exe to see if I could get the chm file to render properly. How would one go about this if wine is not using hh.exe to display .chm files? James
