Regedit

I'm not sure if this was related to my recent install of XP SP3 (I haven't done anything else of note recently...), but I found out today that I was unable to view CHM files on my system. Most of my manuals are stored in CHM format, so, this was something of a pain. While the file itself opened fine, and the content list pane was accessible, the content pane was not; I instead was greeted with a "The page cannot be displayed" error message.