If you want to have the Visual Studio command prompt on the right-click on the folder place the below into a text file with a .reg extension and then add it to the registry.
Windows Registry Editor Version 5.00 [HKEY_CLASSES_ROOT\Folder\shell\cmdhere] @=”Cmd&Here” [HKEY_CLASSES_ROOT\Folder\shell\cmdhere\command] @=”c:\\WINNT\\system32\\cmd.exe /k \”\”C:\\Program Files\\Microsoft Visual Studio 9.0\\VC\\vcvarsall.bat\”\” x86″