i screwed up my apt-sources file

[cecil <xeys_00@yahoo.com>]

ok, can someone copy and paste a good one? I was trying to update sarge 
to "unstable" . this is what I have so far...

#deb file:///cdrom/ sarge main
                                                                                                 

deb ftp://mirrors.kernel.org/debian/ unstable main
deb-src ftp://mirrors.kernel.org/debian/ unstable main
deb http://security.debian.org/ stable/testing  main

this is what happens:
debian:/home/cecil# apt-get update
Err http://security.debian.org stable/testing/main Packages
 404 Not Found
Ign http://security.debian.org stable/testing/main Release
Hit ftp://mirrors.kernel.org unstable/main Packages
Hit ftp://mirrors.kernel.org unstable/main Release
Hit ftp://mirrors.kernel.org unstable/main Sources
Hit ftp://mirrors.kernel.org unstable/main Release
Failed to fetch 
http://security.debian.org/dists/stable/testing/main/binary-i386/Packages.gz  
404 Not Found
Reading Package Lists... Done
W: Couldn't stat source package list http://security.debian.org 
stable/testing/main Packages 
(/var/lib/apt/lists/security.debian.org_dists_stable_testing_main_binary-i386_Packages) 
- stat (2 No such file or directory)
W: You may want to run apt-get update to correct these problems
E: Some index files failed to download, they have been ignored, or old 
ones used instead.
debian:/home/cecil#


So what do i do to get things right, and upgraded?

Thanks in advance,

Cecil