A lot of folks have been wondering about how they can go about converting NUnit tests to VS2K5 Team Test. An alpha version of a 'converter tool' is now available. It supports both C# and VB.NET based tests. Give it a whirl, and I'd love to hear your feedback.

http://www.gotdotnet.com/workspaces/workspace.aspx?id=91936c5e-461f-4027-bdba-8a46f52fefdb