All,
There have been many people asking for how to do installs now that CentOS-4 has moved past End Of Life.
First, I want to tell you that it is VERY dangerous to use CentOS-4 now. There is at least 1 critical (ie, remotely exploitable root) issue on CentOS 4 already:
https://access.redhat.com/security/cve/CVE-2012-1182
The number of unpatched critical issues will grow. Using CentOS-4 is NOT safe.
That being said, here is how you can use the Vault. I have created a CentOS-Base.repo that should work for users who absolutely need it:
http://vault.centos.org/4.9/CentOS-Base.repo
If you replace your current file with this file, you should be able to use the vault.
There will be no updates to the files there.
Thanks, Johnny Hughes