The .CHM files should open with your web browser. If it does not, then you can install any of these FREE softwares to view it...
CHM Decode : http://www.gridinsoft.com/chm.php
CHM Decoder may decompile your CHM file (Compiled Windows HTML Help) or e-book and extract all source files. This tool free for use and work easily and quickly.
Help Explorer Viewer : http://www.freedownloadmanager.org/downloads/Help_Explorer_Viewer_50036_p/
Help Explorer Viewer is a full-featured help viewer for both Windows and Linux. One of its main advantages is 100% support of the WinHelp (.hlp), MS HTML Help 1.x (.chm) and MS Help 2.0 (.HxS) help file formats that are widely used in Windows, which lets you use the same online help files for cross-platform applications running under Linux and Windows. Another great advantage of Help Explorer Viewer is its easy integration into your applications.
CHM Viewer : http://en.kioskea.net/download/download-6388-chm-viewer
CHM Viewer is a tool that enables you to view file that are restricted by network security settings. Simple and easy to use, the application offers an ease interface. The application enables you to view CHM files under Windows.
MORE DETAILS:
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.CHM File Extension
File Description : Help documentation compiled and saved in a compressed HTML format; may include text, images, and hyperlinks; viewable in a Web browser; used by Windows and other programs as an online help solution.
NOTE: Some CHM files may be opened using a Web browser, while others can only be opened with a CHM editor or CHM viewing program.
Program(s) that open CHM files:
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Mac OS: Chmox ,xCHM ,Zipeg,Apple Safari ,Mozilla Firefox
Windows : xCHM ,GridinSoft CHM Decoder ,GridinSoft CHM Editor ,Softany WinCHM, Dawningsoft PowerCHM ,Guohua ChmDecompiler ,Help Explorer Viewer ,Microsoft Internet Explorer ,Mozilla Firefox
Linux : xCHM , Mozilla Firefox
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