ASP.NET 3.5 on Windows 2000

I am trying to get an ASP.NET 3.5 site to run on a Windows 2000 machine (not my idea!!!) but am having some problems. I have been working through copying required DLL files from `C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.5` into my app bin directory. This succesfully got me past the "assembly not found" errors. However, I am now getting the following error. Compiler executable file csc.exe cannot be found" How can I fix this? It is primarily LINQ functionality I am looking to utilise.