Setting devenv to run Visual Studio version of your choice

Recently I found out that my wife has all VS 2003, VS 2005 and VS 2008 installed in her laptop. It is our usual practice that we hit devenv in Windows run menu to open our Visual Studio IDE. So whenever my wife hit devenv in run window, it always opened VS 2003 editor, where as she wanted it to open VS 2005. I just now found out how to change this behavior. Windows run [...]