After you unzip the sample files, set up your Flash Communication Server to handle the server-side processing of this application:
Note: If you are using a local installation of FCS, the path to your Applications folder should be C:\Program Files\Macromedia\Flash Communication Server MX\applications\. You may already have the bwcheck folder and respective files if you have downloaded Stefan Richter's application files for his article.
I have chosen to create separate folders to allow for a more scalable application. This method allows minimal scripting when reusing the bwcheck utility in the future.