I'm running Mathematica 9 on a 64 bit Windows 8.1 laptop. I'm having no luck getting C compilation to work.
    
    Needs["CCompilerDriver"]

    Compilers[Full]  

returns
>     {} 
    
    Compilers[]

>     {}

`$Packages` shows `CCompilerDriver` entries

`$ContextPath` has `CCompilerDriver` as its first entry

I have the following compilers installed:

 - Microsoft Visual Studio Professional 2013
 - Intel C++ Composer XE