It would be nice to see a Help Button on the .NET Adapter that allows developers to see the help for methods they're choosing similar to the help for the ActiveX Adatper.
The .NET adapter already supports XML generated help. The help shows up as a tooltip when you hover over the corresponding code element. For an example, select something in mscorlib and hover over the class or method name.
See msdn for more help on creating xml documentation/comments for your assemblies.
See Doug's comment