How to: Set Environment Variables
The vsvars32.bat file sets the appropriate environment variables to enable command line builds. For more information about vsvars32.bat, see the following Knowledge Base article:
Q248802 : Vcvars32.bat Generates Out of Environment Message
If the current version of Visual Studio is installed on a computer that also has a previous version of Visual Studio, you should not run vsvars32.bat or vcvars32.bat from different versions in the same command window.
To run VSVARS32.BAT
At the command prompt, change to the Common7\Tools subdirectory of your installation.
Run VSVARS32.bat by typing VSVARS32.
VSVARS32.bat can vary from machine to machine. Do not replace a missing or damaged VSVARS32.bat file with a VSVARS32.bat from another machine. Rerun setup to replace the missing file.