Windows self help executable?

[Guest mwebsurfer]

I just did a repair install on my PC and now have a problem with

viewing various files such as html or text. Previously I had an

option under "open with" to use a "Windows self help executable"

or such program. Now it is not there. How can I get it back? I

did a file search and didn't find anything. Any help will be

appreciated. Outlook Express option doesn't display the files

properly.