Automatix2 is a graphical interface (written in python and bash) for automating the installation of the most commonly requested applications in some Debian based distributions.
Add the non-free and contrib repositories to it so that the line looks like this:

[...]
deb http://ftp2.de.debian.org/debian/ etch main non-free contrib
[...]

Then update your packages database

apt-get update

To install Automatix, we proceed as follows

echo "deb http://www.getautomatix.com/apt etch main" | sudo tee -a /etc/apt/sources.list

Afterwards, run

# wget http://www.getautomatix.com/keys/automatix2.key
# gpg --import automatix2.key
# gpg --export --armor E23C5FC3 | sudo apt-key add -
# sudo apt-get update
# sudo apt-get install automatix2

Automatix shortcut can be found Applications -> System Tools.