how do you replace thermastat in a 2000 2.5 v contour on 2000 Ford Contour

over heats in just a few mins of cranking pictures would be great too im no machanic l.o.l

Asked by for the 2000 Ford Contour
thanks i roughed my self through the idler
/water pump belt was shredded i think that was original culprit.didnt see it until i replaced thermastat....can you please explain how to replace it......thank you very much ........ mc65