I'm running Mathematica 9 in a 64 bit Windows 8.1 laptop. I'm having no luck getting  C compilation to work.

Needs["CCompilerDriver"]

Compilers[Full]  

returns nothing and Compilers[]

returns nothing

$Packages shows CCompilerDriver entries

$ContextPath has CCompilerDriver` as its first entry

Microsoft Visual Studio Professional 2013 is installed

Intel Parallel Studio XE for Windows is installed containing
Intel C++ Composer XE