This release includes a dll for both Visual Studio 2008 and 2010.
Add a reference to InfoPathExtractionRules.dll in your test project to get the ExtractAndSubstituteDynamicInfoPathData web test plugin. This plugin automatically recognizes the InfoPath requests then extracts/substitutes the dynamic InfoPath data. If your InfoPath form is in an XmlFormViewControl, use the InvocationPath parameter to identify which requests are for InfoPath.