"This installation package is not supported by this processor type" means that you downloaded the ICE installer for 64-bit Windows, but you are running 32-bit Windows on your machine.
Please visit the
ICE home page and click on the orange button that says "Download for 32-bit Windows". You'll also see a link labeled "Help: 32-bit or 64-bit?" that provides assistance for those who aren't sure which operating system they have.
Eric Stollnitz, Interactive Visual Media Group, Microsoft Research