make sure the drives are connected to the correct ports they came out of on the old board
and make sure the BIOS is set to RAID/Autodetect ( i think its that for the raid mode in dells or something) the same as your old board and you should be good.
I would set the mode in the bios prior to installing the drives as well
Thanks for the reply! I'll let you know how it turns out... **crosses fingers**