Update 3/17/07: A new version of the code and assembly is linked from the article below which fixes a bug with the calibration data.
My latest article has been posted on MSDN's Coding4Fun. This time I have created a fully managed library to use a Nintendo Wiimote (and all current extensions) in C# or VB.NET. You will find a description of what was done, source code for the fully managed library, a test application, and compiled libraries for you to start using immediately.
As always, if you have questions, problems, feature requests, etc. please contact me and let me know. If it's a question or comment that could benefit the masses, please create a new post over on the forum and I will reply there.
Head on over and check it out!