Depends on which one you're installing, they should have instructions. If its a single .cs file, put it in the CustomClasses folder and delete the others. If its a folder containing multiple files, put the entire folder in the CustomClasses folder and delete the other cc's.
Ski i must delete all the arthour ccs ? i mean if i download your warlock cc i delete everthing in coustomclasses file and but the cc ?
