I pasted my source file below, you can edit your's with the command "sudo gedit /etc/apt/sources.list"
[HTML]deb cdrom:[Kubuntu 5.10 _Breezy Badger_ - Release amd64 (20051012)]/ breezy main restricted
deb
http://us.archive.ubuntu.com/ubuntu/ breezy main restricted
deb-src
http://us.archive.ubuntu.com/ubuntu/ breezy main restricted
## Major bug fix updates produced after the final release of the
## distribution.
deb
http://us.archive.ubuntu.com/ubuntu/ breezy-updates main restricted
deb-src
http://us.archive.ubuntu.com/ubuntu/ breezy-updates main restricted
## Uncomment the following two lines to add software from the 'universe'
## repository.
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## universe WILL NOT receive any review or updates from the Ubuntu security
## team.
deb
http://us.archive.ubuntu.com/ubuntu/ breezy universe
deb-src
http://us.archive.ubuntu.com/ubuntu/ breezy universe
## Uncomment the following two lines to add software from the 'backports'
## repository.
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb
http://us.archive.ubuntu.com/ubuntu/ breezy-backports main restricted universe multiverse
deb-src
http://us.archive.ubuntu.com/ubuntu/ breezy-backports main restricted universe multiverse
#Multiverse
deb
http://archive.ubuntu.com/ubuntu/ breezy multiverse
deb-src
http://archive.ubuntu.com/ubuntu/ breezy multiverse
#Security
deb
http://security.ubuntu.com/ubuntu/ breezy-security main restricted
deb-src
http://security.ubuntu.com/ubuntu/ breezy-security main restricted
deb
http://security.ubuntu.com/ubuntu/ breezy-security universe
deb-src
http://security.ubuntu.com/ubuntu/ breezy-security universe
## BACKPORTS REPOSITORY (Unsupported. May contain illegal packages. Use at own risk.)
deb
http://archive.ubuntu.com/ubuntu/ breezy-backports main restricted universe multiverse
deb-src
http://archive.ubuntu.com/ubuntu/ breezy-backports main restricted universe multiverse
deb
http://ubuntu-backports.mirrormax.net/ breezy-extras main restricted universe multiverse[/HTML]
I also just found out about
this site which can generate a source file based on which repositories you want.