A couple of days ago, I released Billix 0.20. Changelog is as follows:

Removed Ubuntu Feisty (7.04)
Added Ubuntu Hardy (8.04LTS)
Moved Damn Small Linux directory from KNOPPIX to DSL to facilitate customization in the future.
Updated Centos 4 to version 4.6
Updated Centos 5 to version 5.1

Go get it from here.