[CentOS] How to Upgrade CentOS 3.8 to CentOS 4.4?

Fri Sep 29 19:09:38 UTC 2006
Scott Sharkey <ssharkey at linuxunlimited.com>

Is this possible/recommended?  Or is it preferable to rebuild from 
scratch?  I would prefer not to rebuild, but wanted to see what people 
thought.

-scott