If you don't have any specific requirements apart from being able to install a few executables, then basically anyone will do. I'd recommend NSIS, not because it is particularly easy to work with (it has a cumbersome assembly-like language which isn't to practical to do more complex things in), but because it is free, has a large and active community, and it generates fast installers with very low overhead. As an extra bonus, you can run the compiler (i.e. the tool which generates the installer) on Linux.
Edit: ...and whatever you do, do NOT use InstallShield.