problem updating plz help

[xnuo]

i've been trying to update my sistem for the past 8 days and i keep getting the same message over and over again...

"Failed to fetch http://www.getautomatix.com/apt/dists/feisty/main/binary-i386/Packages.gz 404 Not Found
Some index files failed to download, they have been ignored, or old ones used instead."

i know that the page is missing... but how can i fix it (setting another update page maybe) and how can i do it ?

[cdtech]

It's an invalid site. Have you manually tried to access that site yourself?

P.S.
You can change your sources.list using "sudo gedit /etc/apt/sources.list"