During my whirl-wind tour of Whidbey I am taking the ride using VSTD (there is a joke ther somewhere <STD>). Coming from NUnit / TDD.net and VS 2003, I was used to dealing with configuration through the configuration file myassembly.dll.config. Now that I am using the tests from VS and looking at the new System.Configuration goo (tech term), I thought this feature was gone because I could not find any documentation. Boy, was I wrong.
All you have to do is create an App.config file, rename it to your assembly name .dll.conig and set the file to always be copied (click file and then look at the properties window, there is a drop down for that option), and by magic, the test runner uses this file.
Hope this helps someone out there.