I am in desperate need of information. Please HELP!

Can someone please tell me where to find the Radiator Thermostat?
Is this a Do-it-yourself project?

Any HELP would be appreciated...THANK

Follow the "component location" link in
http://www1.autozone.com/servlet/UiBroker?ForwardPage=/az/repair_info/repair_info.jsp

Yes, changing a thermostat is a piece of cake. Just be careful to put the new one in the same orientation as the old one. Use a torque wrench on the housing bolts.