i was in the same boat man.
first of all check tot see if your car came wired for the fogs. if not you will need to buy along with your foglights and bezels (you need the bezels...or eles you will have nasty gaps around the fogs), the wireing and switch (you HAVE to have the switch with the foglight option or it they will not operate). my focus had the relay but was not wired for the fogs.
if your car does not have the nessescary wireing i have a set of stock wires (never used on a car these are brand new) and a headlamp switch with the foglight switch for sale in the Buy/Sell/Trade section. but you will still need the Foglights themselves and the Bezels. i bought my foglights and bezels off a site www.directfordparts.com
for 130 bucks shipped.