Hey! I just installed my RAID card the other day.
<----- By far no one experienced on RAID, however I can tell you what I did.
First off, recompiled my kernel to support RAID. I then, fired up a terminal and ran:
lspci -v
And found which one was my raid info. I then fired up a browser (I fire everything up

) and headed over to
www.google.com/linux and
http://www.linuxquestions.org/questions/search.php to see if I could find any hitches I might have with my card. I then copied and pasted my model info from lspci into the search engines and some threads/websites on it. It was (thankfully) supported. I then, finished up my kernel compile, included the support for my card ( CMD Technology Inc PCI0649 ) and setup lilo to test the new card. Everything worked out great, and it booted quite nicely (used the new 2.4.20-lq1 kernel).
HTH
Cool