Two are raided and two are not. :-) I am using the ICH5R south bridge. They are two Western Digital WD2500 250G SATA drives and two Maxtor DiamondMax Plus 9 250G SATA drives. I use an IDE 133 200G Maxtor drive as well for my boot and C-drive.
Please tell me you aren't reciting this from memory! LOL! I can't even remember the manufacturer of my motherboard, but I love the disco lights on the north bridge fan.