What does the EXE do in the Visual Studio setup project output

Question

We are working on a winforms app in Visual Studio 2005 and the setup project we created output both an MSI and an EXE. We aren\'t sure what the EXE file is used for because

Answer 1

I think the EXE is just a wrapper/bootstrapper for the MSI in case you don't have Window Installer. If you have the requisite Windows Installer version installed then the MSI should work fine on its own.