Here are two set's of instructions for setting up the client's on Debian :
http://testing.drupal.org/node/44, without using the set-up script
http://testing.drupal.org/node/45 Debian Lenny
Here's instructions for getting Centos set-up:
http://testing.drupal.org/PIFR2-Centos-installation-instructions
How to get Postgress client set-up on Debian:
http://groups.drupal.org/node/23617#comment-81971
Once your client is installed, we need to get you an account on the version 2 master server.