Adding new programs to Default Programs

For a week I was facing problem while associating files to open with
some application. Though I was able to locate the application, yet it
didn’t showed up on the open with dialog, like this:

(Here, I browsed for the application. yet it is not appearing here.)

I stumbled across this solution:

http://windowsxp.mvps.org/openwithadd.htm

This nifty utility allows you to add programs to the default programs list thereby allowing you to associate your files with the application of your choice.