http://blogs.msdn.com/densto/archive/2007/03/19/dynamic-querystring-correlation-new-custom-extraction-rules-and-webtest-plug-in.aspxHere is an article with some custom rules and plug-ins that you can use to apply dynamic querystring correlation to your web tests. These can be useful if you are testing a site that uses querystring parameters to track dynamic values (such as sessionen-USCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.msdn.com/densto/archive/2007/03/19/dynamic-querystring-correlation-new-custom-extraction-rules-and-webtest-plug-in.aspx#8291769Mon, 17 Mar 2008 19:53:28 GMT91d46819-8472-40ad-a661-2c78acb4018c:8291769Ed Glas's blog on VSTS load testing<p>Visual Studio Team System for Testers Content Index for Web Tests and Load Tests Getting Started Online</p>