Irrlicht.Net is no longer developed or supported, Irrlicht.Net Cross Platform is a much more complete wrapper. Please ask your C# related questions on their forums first.
No, you guys mistnerpeted what I said, Are the express versions of the .NET language compatible with the Irrlicht? These are the free versions of VB.NET, VC.NET, VJ.NET and C#.NET
Yup it is compatible with Irrlicht. There's actually no difference or any compatibility issues to talk about when using the Free express version of Visual Studio compared to using the paying professional versions. You can use any IDE if you want, including SharpDevelop or even Notepad, so long as you write .NET code you can use Irrlicht using .NET.
Sketches of a rambling mind
Still a long way on learning Irrlicht...