C# CodeProvider: Add reference to XNA?

I'm creating a scripting engine for my game, and I need C# scripts to have the Microsoft.XNA.Framework assembly referenced so that I can inherit from my own classes.

Currently, I error when I add a reference to Microsoft.XNA.Framework.dll. This is my reference adding code (I've left out the reference to my own EXE, but it is there.):

parms.ReferencedAssemblies.Add("System.dll");
parms.ReferencedAssemblies.Add开发者_JAVA百科("Microsoft.Xna.Framework.dll");
parms.ReferencedAssemblies.Add("Microsoft.Xna.Framework.Graphics.dll");
parms.ReferencedAssemblies.Add("mscorlib.dll");

And here is my code to be compiled:

using System;
using Microsoft.XNA.Framework;
using Microsoft.XNA.Framework.Graphics;
namespace _2342 {
namespace Blocks {
    class MyClass : Block
    {
        public MyClass() {
        _name = "TestBlock";
        }
    }
}}

I get two errors from the CodeProvider saying that neither of the XNA DLLs can be found.

How can I fix this?

You have misspelled the assembly name 'Microsoft.XNA.Framework'. It should be 'Microsoft.Xna.Framework'

This might be related or have relevance. When i did that for my scripting engine it choked since XNA is in the GAC. Therefore i had to do something like this

ReferencedAssemblies.Add(@"C:\Program Files (x86)\Microsoft XNA\XNA Game Studio\v4.0\References\Windows\x86\Microsoft.Xna.Framework.dll");

with "C:\Program Files (x86)\Microsoft XNA" being the install path of my XNA dlls.