We have RHEL 6 at our uni lab.
64 bit computers, so the pymol 1.3 in the official channels did not work.
So, I figured out how to install necessary .rpm packages from CentOS repositories.
Now you can build you own subversion pymol in RHEL 6.
The install script include automatic setup of:
PluginArchitecture - Smart installation of scripts from for example Dr. Robert L. Campbell scripts.
Pymol-script-repo - A long list of the modules available at the pymolwiki
Freemol - So you can save .mpg videos right away.
The installation is explained here:
Ubuntu / Mint
And the install script here: