[CentOS] Migrating software raid from SUSE 9.0 to Centos 5

I have a SUSE 9.0 box with a software raid.
It consists of 6 IDE drives and three different controllers
The OS is on a separate drive.
What I want to do is put a new boot drive in load Centos on it.
Then I want to be able to mount the raid without loosing any of the data on
it.
What information do I need from the SUSE OS (raid info etc...) to tell
Centos how to recognize it?
The data is backup on DVD's but it would be a real pain to reload it.(its
around a terabyte of data)
So I'm writing here for some advice.
I've setup many raids in the past but only fresh installs.
Thanks