PLZ HELP!!! When i try to register for an account on netgame.com its says invalid security key? plz help!!?

The games on the website look fun and if u could help me that problem it would be great! if u dont no how can u plz make me an account and email the info to me at k_boy333@yahoo.com plzplzplzplz!! i wnat the username to be runesux!