You could make a file finder function that finds and checks the filepath of drives from A through Z (use an alphabet char return function). That would make your program a little more...Versatile. You could also add a folder dialog and allow the user to choose their cache folder themselves...
CACHE is the game itself it has nothing to do with your accounts it is suspected to contain the users list that ever connected from it but that never matters becoz if u r on a lan network likemy school and u play from there too then loads of other account also connect from those ip addresses and caches