If it has something to do outside of an emulator (like in a game file) then you need to know what it does (say, character stats) and then in what order the program puts data in the file and then what that data means. You can just open it in Notepad, but you wont understand it. BIN styands for binary (i think?) and therefore could be used by any program and hold any sequence of data in any order. That is why it's so popular in games and other programs with data they don't want you getting at.
Unless you know what the file does, and you write/download a de-crypter for that specified file you can't do anything with it (unless it has something to do with an emulator, where i know nothing about it)