I have been working on creating a set of reports which will report on the data in the Load Test Results store which is part of Visual Studio 2005 Team Test Edition.   These reports have been developed using SQL Server Reporting Services.  One of the benefits of using this package is that it allows the reports to be generated in a number of different formats.  For example, you can view them through a website, pdf file or excel work book.  Another benefit is that the reports can be customized rather easily.  The reports are now available on codeplex: http://www.codeplex.com/loadtestreports/

 

Check out this blog post for screen shots: http://blogs.msdn.com/slumley/pages/load-test-reports.aspx