Cant log in

[ Moved to the Fixing WordPress sub-forum. ]

Hi, I’m trying to change my wordpress url and have messed up a bit I think as I cannot manage to log back in.
In settings>general i changed the site address (url) and also the wordpress address (url), now when i try to log in to either the old address or the new i get the message;

server DNS address could not be found.

If anyone can help me log back in it would be hugely appreciated.

Thanks
Adam