Fiddler and VSTS2010 WebTests

http://blogs.msdn.com/slumley/archive/2009/11/03/vsts-2010-feature-making-it-easy-to-debug-web-tests-using-fiddler.aspx
With the beta2 release of Visual Studio 2010, we have made this even easier. Now to get Fiddler to capture the traffic from your web tests, you just need to do the following:

1. Launch Fiddler
2. Play your web test

That is it. No code to write or any extra configuration.