This is the base page of the section of installing windows hlp and chm help, etc..
The content you are looking for can be found via the navigation to your left ←. some of these folder index pages have content, but most like this one don't.
windows doesn't (why?) come with .chm and .hlp help file drivers installed or configured. it might take some techie work (why is this, Microsoft?). I think it should have come preinstalled with the OS.
the page that offers 32-bit drivers for .hlp files, winHlp32, are really links for both 32 and 64-bit drivers, so don't let the 32-bit misnamed label fool you.
this one is interesting, there are actually .chm viewers for