If SATA is your only choice you want a SATA PCI card, you would also need a a MOLEX to SATA power adapter
SATA Card is about £11
http://www.ebuyer.com/product/48670
Molex Adapter is about £2
http://www.watt-power.co.uk/catalogue/molex-sata-adaptor-p-929.html
These are what is required, shop around to find a store that does both to save on postage.
Perp
PerpetualOmega, July 2008