From another novice on SATA raid, the RAID circuit on your board is likely to be useless under Linux if I understand what I have read on the subject, this is very much designed as a "winraid".
Also SATA allows hot swap that is not possible with IDE drives.
There may also be booting problems if the RAID array contains your / directory.
As far as I know RAID is set up in both, the BIOS and the OS but I thought Linux accesses the devices directly, bypassing the BIOS.
In my view you have no other choice than using your SATA connections and have your OS installed on the first IDE device, this would give you a connection for the CD drive.
Hope this helps, I am not qualified to advise further and take this advice only if you get no better one.
Last edited by rblampain; 01-31-2007 at 08:12 AM.