A CHM file is Microsoft's version of a Compiled HTML Help file. Under windows you would just doubleclick on the filename. There is a free utility available to convert .CHM file to .HTML files, which then can be read with any browser. Download from: http://www.gridinsoft.com/chm.php
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thnku very much ur code is working chm file is opening but its opening in a same applications,
whenever i open through ur code,it is opening as child process,coz of this parent process is stopped till i close the newly created process which is chm file
I need to open totally as a separate process.