just make sure the car has been left off for a while so some of the pressure is relieved from the system and the engine is completely cold.
stuff a rag under the filter, undo the top and bottom hose clips, unclip the filter from the bracket (just pulls off), then pull the top hose off and catch any spilt petrol with the rag (watch out for a little squirt of fuel as it comes off - mind your eyes), then with the rag in your hand pull the bottom hose off and immediately hold the rag on the bottom nozzle while you lift it out of the way. then just plug your new filter on to the hoses, tighten the hose clips, clip it back in the holder, make sure any fuel that was spilt has been wiped up and then turn the key to the on position to prime the fuel system. check for leaks - then you can start it up - check for leaks again and your done.