Yes Andy you could, basically that is the same as your motherboard raid card, apart from it's just a PCI card. That may be one solution by buying the card or similar.
Like DBcoupe though i would prob forget the SATA drive and just run the IDE drive and maybe get another?.
Are you using a wireless keyboard andy? I would try f12 and also del, or does it say bios setup on the splash screen by pressing f2 ??