http://bugs.winehq.org/show_bug.cgi?id=21013
--- Comment #9 from Artem S. Tashkinov t.artem@mailcity.com 2011-03-18 16:10:20 CDT --- OK, I'm now running Wine 1.3.16.
I can only see the first initial page of the WordPad's CHM help file: table of contents is shown but if you click it nothing happens, so effectively you cannot browse this help file (except when clicking items in "Index" or "Search" - but that's far from being convenient or useful).