AFAIK mysql doesnt save a "file" for every database you create. The only ways i know of to backup are either by phpmyadmin or by mysql command line, but then the server would have to be running.
Perhaps someone else knows of a way here, but i'm sorry, i can't help u further on this problem then

. Googling didn't bring any other ways either.
-------------
Nevermind.. this is the solution:
http://stackoverflow.com/questions/4...physical-files
Dont feel like retyping their work! So here's the link, so they get the credit for their answer

. I didn't know this either.