apt-get problem

["Bill" <bill@willco.org>]

Hi all,
        can someone tell me what is to be done to fix this problem.


sources.list
deb http://http.us.debian.org/debian unstable main contrib non-free
deb http://non-us.debian.org/debian-non-US stable non-US


debian:~# apt-get update

Err http://non-us.debian.org stable/non-US Packages
  Could not resolve 'non-us.debian.org'
Err http://non-us.debian.org stable/non-US Release
  Could not resolve 'non-us.debian.org'
Err http://http.us.debian.org unstable/main Packages
  Could not resolve 'http.us.debian.org'
Err http://http.us.debian.org unstable/main Release
  Could not resolve 'http.us.debian.org'
Err http://http.us.debian.org unstable/contrib Packages
  Could not resolve 'http.us.debian.org'
Err http://http.us.debian.org unstable/contrib Release
  Could not resolve 'http.us.debian.org'
Err http://http.us.debian.org unstable/non-free Packages
  Could not resolve 'http.us.debian.org'
Err http://http.us.debian.org unstable/non-free Release
  Could not resolve 'http.us.debian.org'
Reading Package Lists... Done
Building Dependency Tree... Done
W: Couldn't stat source package list 'http://http.us.debian.org
unstable/main Packages'
(/var/state/apt/lists/http.us.debian.org_debian_dists_unstable_main_binary-i
386_Packages) - stat (2 No such file or directory)
W: Couldn't stat source package list 'http://http.us.debian.org
unstable/contrib Packages'
(/var/state/apt/lists/http.us.debian.org_debian_dists_unstable_contrib_binar
y-i386_Packages) - stat (2 No such file or directory)
W: Couldn't stat source package list 'http://http.us.debian.org
unstable/non-free Packages'
(/var/state/apt/lists/http.us.debian.org_debian_dists_unstable_non-free_bina
ry-i386_Packages) - stat (2 No such file or directory)
W: Couldn't stat source package list 'http://non-us.debian.org stable/non-US
Packages'
(/var/state/apt/lists/non-us.debian.org_debian-non-US_dists_stable_non-US_bi
nary-i386_Packages) - stat (2 No such file or directory)
W: You may want to run apt-get update to correct these missing files