Have you been looking for Ndoc or the cool document generator that was available for C# in VS 2003. They no longer seem to exist, I'm not sure what the whole story is behind the scenes, but I have come across a nice tool that works in their place.  

It's called SandCastle. I checked it out and it worked very well, creating some really nice MSDN stlye documentation complete with C#, and Managed C++ samples. I tried out Eric Woodruffs GUI which was easy to use especially if you've ever used Ndoc.

Give it a try I think you will be impressed with the outcome.