Help with WebBrowser Control

[Roy]

I have vb.net application that needs to read a string object whose data is formated into PDF, Word and HTML. I've been successful reading the HTML stream into the WebBrowser control.

How are PDF and Word files read (or streamed) into the WebBrowser control or, better yet, how do I cause the WebBrowser control to launch the correct plugin?

Note: There are no files to open or navigate to. The only input is from a string object.

Thanks!