Darkrai

Alright, sure, no problem at all, I can help you. While it is good that you have managed to get your hands on a Membership card all by yourself, you could have just searched Google. But, I am glad that you have come here and asked us. What you will want to do now is use your Pokemon and fly to Canalave City. Once you arrive in Canalave City travel through the town until you see the locked hotel. Go near the door and press the A button on the door. Since you have the membership pass, the door will now open for you and you can go inside. You will see a man in there so let him lead you the bed and fall asleep. You will wake up on a strange island so follow the path and defeat Darkrai when you see him since you are sleeping. After you beat him you will wake up so leave the hotel and then go talk to the sailor. You can now sail to the island that Darkrai is on. Hope this helps.

To help you, you first must have the National Pokedex to be able to catch Darkrai. Once you have the National Dex, go to Canalave City. You may remember that locked house in the far north of the city. Once you have the Member's Card, you will be able to go inside. Once inside, a man will escort you to a bed. You will be entering a dream, which takes you to an island called New Moon Island, where Darkrai is located. Darkrai is at level 40. But watch out, if he is able to put you to sleep, because of his ability, you will lose health constantly. Be sure to use Awakenings before you lose too much health. Once you beat him, hopefully caught, you will be woken up and escorted out of the hotel.

Hope I helped,
Sk8rboy

Weell it dosnt work the first time some times but you go to canalave city and you go into th inn. Then a creepy guy will make you go into a bed and you will fall asleep. You will then appear in newmoon island and then go through the tree passage. Then you will see darkrai. Click on him and you will battle him.

P.S. You can do this as many times as you want!