Howtoforge posted a guide about installing Debian Squeeze (6.0) domU on CentOS 5.5 x86_64 dom0

This tutorial shows how to create a Debian Squeeze (6.0) domU on dom0 running CentOS 5.5 x86_64.

  Installing Debian Squeeze (6.0) domU On CentOS 5.5 x86_64 dom0