Where is the thermostat in My Mazda 6s?

I saw the ';how to change the thermostat the easy way'; and the Ehow tutorial and neither of them make much since to me. Ive just moved and have nowhere to go that wants less than 150 for what i understand is a simple job. Can anyone explain where it is is my car. Please and thanks very much.Where is the thermostat in My Mazda 6s?
You follow your upper radiator hose (i think), and it will lead to a housing, inside that housing is your thermostat. Take the housing off and dont forget to put sealant on it when you put it back on. You might want something to catch anti-freeze with also, it will make a little mess