Silverlight: How to open a system application to open a file.

Question

I want to create a silverlight application by providing the URL of a file, then it opens the right system application.

Example: if the file is .pdf - it opens acrobat reader .doc - opens winword

Answer 1

This cannot be done in silverlight unless you run it out of browser with elevated rights--that I know nothing about, but it shouldn't be many minutes of googling.