Why not. Here is a good article, from object mentor.
Found another blog post, TDD - Introduction to Moq. Its related to C# and VB.NET.
Checking out Myth and Misconception regarding TDD is a must.
Here is a book related to .NET, TDD in Microsoft .NET.
Here are a few that I would recommend:
Books are always a good resource - even though not free - they may be worth your time searching for the good free resources - for the money those books cost.
"Test driven development by example" by Kent Beck.
"Test Driven Development in Microsoft .NET" by James W. Newkirk and Alexei A. Vorontsov
please feel free to add to this list