go to google and type in
game_renamer.exe
download it, and run it as admin (if u have vista or windows 7)
make sure you already have 1 client up and running
put under Old Client Name: Element Client
put under new client name: anything u want
then clicke rename, the current client u had open should not be element client anymore but should be w/e u put in new client name. now you can run another client