Shoutbox

i have encrypted my log files, and now there´s one i really need to open but i cant, i get a sign saying that my password isnt correct, but it is!!! PLEASE HOW CAN I DO TO FIND OUT WHAT THE CORRECT PASSWOD IS???? i must have written it wrong, but now i cant get it right and i really really need to open that history, does anyone know what i can do??? please write
thanxxx