Where is the web server root folder?

I am trying to get around the same-origin policy using flash to send data to the WebMethods server. In order for that to work, I need to place a configuration xml file in the root directory of the web server (from what I’ve read).

Can anyone either tell me where the root directory is OR correct me with using flash to send a soap message to the IS?

Thanks!

C:\WebMethods65\IntegrationServer/packages/Default/pub