As we all know, Debian Etch has been no longer supported since feb 2010. But still some machines might be running Debian Etch(Upgradation not feasible). If your searching for any source to install packages to your machine. Ass this below sources in to your sources.list file.
# vim /etc/apt/sources.list
deb http://archive.debian.org/debian/ etch main contrib non-free
# apt-get update
# apt-get install