How do I change the fuel filter on my 2004 Pontiac Grand Am?

the fuel filter is behind the gas tank. be very carfull removing the green clip. if you break it you have to buy a new fuel pumpHow do I change the fuel filter on my 2004 Pontiac Grand Am?under the engin near the front usually there is a can looking thing, unscrew and add a new one, but it is usually best to drain old oil and replace, then add the new filter...