[Centos] Differences CentOS 3.1 and RedHat 9

[c.xxx@xxxxxxx (c.xxx@xxxxxxx)]

Hello everybody,

I would like to port a larger package to CentOS 3.1.
The package has been designed for RedHat 9.
Does anybody know the differences? Can anybody give me a pointer to a
list of differences?
This could save me a lot of work.
Thanks in advance
Chris