1. A method, for use in an information handling system, of mapping a file name to a computer system containing said file, said computer system containing said file being in a network of computer systems, said file name being a composite name, said method comprising the steps of: creating a list of names of said computer systems, said list of names being arranged in an order wherein the first name in the list is the name of a root computer system, each succeeding name being the name of a computer system located logically the closest to the root computer system; obtaining said file name; and matching each name in said composite file name to each name in said list, the names in said composite file name being in the same order of appearance as that in the list of names, a last name to be matched being said computer system containing said file.