[admantis]

There is little difference, but you are more comfort using the native file functions, because you open the file, read everything in one hit, and close it. That is what y_INI does, but I can't tell if there is something faster than the /original/ function.
The file format is a point up.

So yes, you might want to use it. Also, I recommend replacing "strfind" with "strcmp"; if the player "John" is banned, for example, "John2" will be banned too.