Account issue

Ok, so I played crossfire for a while, then I just forgot about it. Now I am trying to log into my original account I had, but I forgot the username and email. I know it sounds like im a stupid hacker, but i'm not. Is there any way to find out my email that I used for the account?
And send me the security answer or whatever if needed, I would really like my account back.
Please help me with this, thanks.