hi,
Try running from the Start menu: Microsoft Visual Studio 2010 Express, Open Visual Studio Command Prompt (2010).
This runs C:\Program Files\Microsoft Visual Studio
10.0\VC\vcvarsall.bat. You need to pass
in a platform (x86, etc.). Run it from the menu.
here are two good links for this
http://social.msdn.microsoft.com/Forums/en/Vsexpressvcs/thread/f5c0311b-a2b8-420b-b854-f864fd69a275
http://www.c-sharpcorner.com/uploadfile/rmcochran/commandpromptinstudiotoolsmenu01152008103357am/commandpromptinstudiotoolsmenu.aspx
hope this will help you