> What do I tell them? ... that every CHM file on the computer works
> correctly except for the one for JPSoft's TCMD v13.
> And rebooting did not help. As I said before, all other CHM files
> display vertical scroll bars (in the text area).
> What's internet Explorer? :-) No windows components are updated on
> that machine.
You really, really, really need to talk to Microsoft; only they can tell you why hh.exe might decide to stop displaying scrollbars. (Who knows, maybe they have a registry setting on a per-file basis.)
Windows html help (any .chm file) requires IE to do the parsing and display.
If you haven't updated any Windows components, then you've probably got IE 6
installed, which is (1) catastrophically awful, (2) unsupported by anybody
(including Microsoft!), and (3) likely to shoot off both of your feet and
lobotomize your system at any moment.
Do not touch ANYTHING on that system until you've updated IE to a version
that actually works some of the time.