Just FYI, wulee, the Mandrake Control Center/Software Management is just a graphic front end to urpmi.
Visit an EasyUrpmi site, set up your repositories (Firefox is on "contrib", IIRC), and you can install it from the control center.
And the last time I checked, the version available via urpmi is the "pre-final" version, not the final FireFox 1.0. It works fine, but if you want the latest version, follow cadj's advice above.
