In terms of the BIOS, I changed the SATA Mode in the OnChip SATA Device menu to RAID and the Controller Mode (Storage Controller) in the Onboard PCI Device to RAID aswell. After that, I followed a guide to setup the RAID0 (CTRL+I menu etc) and then proceeded to install Vista 64 bit Home Edition and before I installed the os, I loaded up the Intel RAID/AHCI Installation Drivers (Universal abit > Motherboard, Digital Speakers, iDome, AirPace, Multimedia) and finished installing Vista. The problem is, looking at my performance index mark, I got 1.0/5.9 for Graphics when I had 5.9/5.9 before I had the RAID0 setup so my graphics card is obviously not functioning properly. The problem could be that I used the wrong RAID drivers possibly?
If anyone could tell me what the problem is, I don't think i'd be able to thank them enough haha.
If it helps, i'm using the aBit IP35 Pro Motherboard along with the Geforce 9800GTX+ Graphics card.