do /etc/apt/sources.list přidat
deb http://backports.debian.org/debian-backports lenny-backports main
instalace balíčku pak pomocí
apt-get -t lenny-backports install "package"
Normally packages won't get upgraded automatically from backports.debian.org (due to the NotAutomatic flag). To get packages that you have installed from backports automatically updated you have to have add a pinning, either to /etc/apt/preferences:
Package: *
Pin: release a=lenny-backports Pin-Priority: 200
jinak nebudeme stahovat nové verze.