You go to the membership page, and say you have a code. Then type in the numbers 2583. Then type in 6 more random numbers and enter it all together. You should have a membership! And if it doesn't work the first few times, it's because someone is already using the code! Keep trying, it will work! If it doesn't try adding another 3, then it will probably work. If you have any questions, please ask! (Although I have tested this and it does work, I personally prefer not to use this cheat, I find it easier to just buy a membership)
(Click HERE to visit roxycon's site to see how badly she copied mine)
EDIT: Roxycon changed her url, click HERE to view her site.