Originally Posted by
SpooForBrains
AvengedSevenfold_Fan, you're missing something fundamental about Linux. Linux distributions (like Ubuntu) have package managers. This is to make the traditionally quite hard task of installing software very VERY easy.
Debian / Ubuntu / Kubuntu have arguably the easiest package management system of all of the Linux distros.
To install something, open a console and type
sudo apt-get firefox
There you go, Firefox has been installed.
Someone somewhere took Mozilla's source release of firefox, spent a LONG time optimising it for Debian / Ubuntu, and making sure that YOU could install it easily with ONE command.
Now, if you want to download it from Mozilla's site yourself, and install it yourself, then you're welcome to. There's an installer inside the package you downloaded. But YOU DON'T NEED TO.
Unless it's something really esoteric, there will be a package for it in the package repositories which you can install with sudo apt-get packagename.
For AIM, for example, type sudo apt-get gaim. This will install the multiple-protocol messaging client gaim.