Here is a list of the best free CHM file reader software and online tools. These free software and online services allow you to open and view CHM documents. CHM, which stands for Compiled HTML file ...

What steps do I need to take to change the default action on Windows XP and Windows 7 when someone tries to open a CHM file? I want the file extension to be associated with notepad.exe for ALL users.

.chm are the new Microsoft HTML Help v1.1 (I think it's 1.1) files. There's some patches somewhere on Microsoft's site to update the engine behind the concept. Sadly I lack the URL here.

To use SumatraPDF, visit the official homepage and click 'Download' at the top of the screen. Click the installer that matches your environment. This time, select the 64-bit version ...