HowtoMatrix

First you must have OpenVZ installed and configured. You can find a
tutorial to do this on HowtoForge. Because of a small problem/error in
Debian Etch, it is not possible to update the Rubygems system because a
Require in the gems is missing. But we can solve it with a simple edit
of the file. WebVZ is one of the simplest and most powerful web
management tools for OpenVZ.

Read more at HowtoForge