You need to search for the "vcvarsall.bat" file and run that in the command prompt to setup the "cl" command. This adds "cl" to the path.
For example, the following commands should configure command-line builds:
| cd "\Program Files (x86)\Microsoft Visual Studio 12.0\VC"
vcvarsall amd64
|
I think there's a text file in the HH misc directory with the command-line arguments that you can use to have every command prompt configure this when you open it.