Good suggestion, although it should be noted this program is in beta so I'm wondering if it's ready for prime time. Has anyone else tested this?
I've modified the extract instructions to use 7zip as that has fewer steps (you don't have to rename the file).
Amusingly the uninstaller program that comes with this program has a non-zero score in Virustotal:
EDIT: Verified as portable and stealth but, since this program relies on the default web browser, does that still counts as stealth?
Related topic: Winja