Error in givíng new mail address / unable to login again

[sunchaser2]

Hi,
I don't know if my question is at the right place, sorry. I don't know where to ask it.
So, I tried to change my mail address and i've entered a wrong one ( I was thinking of something else at the same time ).
So now I can't login again with my account as "Sunchaser" etc ... What can I do ?

Thanks.