-# CDROMs are managed throught the apt-cdrom tool.
-deb http://http.us.debian.org/debian stable main contrib non-free
-deb http://non-us.debian.org/debian-non-US stable non-US
-deb http://security.debian.org stable updates
+# CDROMs are managed through the apt-cdrom tool.
+deb http://us.archive.ubuntu.com/ubuntu dapper main restricted
+deb-src http://us.archive.ubuntu.com/ubuntu dapper main restricted
+
+deb http://security.ubuntu.com/ubuntu dapper-security main restricted
+deb-src http://security.ubuntu.com/ubuntu dapper-security main restricted
+
+deb http://us.archive.ubuntu.com/ubuntu dapper-updates main restricted
+deb-src http://us.archive.ubuntu.com/ubuntu dapper-updates main restricted