Raid configuration?

I have an Abit AX8 motherboard with a VIA K8T890-8237 chipset and onboard RAID w/2 RAID connections. Have a SATA (Maxtor) 200GB drive & an 80 GB Maxtor ATA133 drive. Have 2GB of memory.
Question is this:
What do I have to do to configure my computer for RAID 0 ? Do I need another SATA drive or can I partition the 200GB drive?