I'm looking to add a testing suite to my application, however I can't move to the newer testing frameworks for .NET 3.5.
Does anyone have a suggestion about good testing frameworks to use?
We use MbUnit and Rihno Mocks and they prove to work very well together. When doing TDD you will almost certainly need to do some form of dependency injection, while this can be done manually, its worth looking at an IoC container such as Castle Windsor.
It well worth looking at John Paul Bodhood's screen casts to get you started. JPB's Blog