This is the official archive for pre-compiled linux kernel packages for Debian.

Add the following line in your /etc/apt/sources.list file:

   deb http://download.openvz.org/debian etch main

This archive allow verification of signed release files. Download the following
file and add it to the allowed keys for apt.

  http://ftp.openvz.org/debian/archive.key

Add it by issuing the following command:

  apt-key add archive.key

For more instructions on how to secure apt take a look on the following link:

  http://wiki.debian.org/SecureApt

Author of this document is:
 Ola Lundqvist <ola@inguza.com>