apt:

# 
# deb cdrom:[Debian GNU/Linux 4.0 r3 _Etch_ - Official i386 DVD Binary-1 20080217-11:31]/ etch contrib main

# deb cdrom:[Debian GNU/Linux 4.0 r3 _Etch_ - Official i386 DVD Binary-1 20080217-11:31]/ etch contrib main

deb http://ftp.es.debian.org/debian/ etch main
# deb-src http://ftp.es.debian.org/debian/ etch main

deb http://security.debian.org/ etch/updates main contrib
# deb-src http://security.debian.org/ etch/updates main contrib