In Pokemon platinum how do you free azelf uxie and mesprit?

How do you free the Pokemon of the lake? EASY all you do is go to the galactic hideout in veilstone and once you are up in the place thing where you are talking to Cyrus, follow him and take the YELLOW portal (the green one takes you back to the main floor and you have to start back all over again) and you get the place with Saturn and the old dude and you talk to Saturn and you don't have to battle she just talks and then they leave and you press the button and they are realeased!