1. A distributed computer system implementing a plurality of dispersed data storage networks comprising: i) a plurality of slice servers each including a network port coupled to a network; and ii) a grid access computer for receiving at least one request from a client computer and including a network port coupled to said network, wherein said grid access computer accesses a plurality of information records each specifying a virtual data storage vault comprised of a subset of said slice servers forming a dispersed data storage network, and wherein each of said information records also comprises an access control list specifying at least one account associated with said dispersed data storage network, and wherein said grid access computer (a) identifies a virtual data storage vault associated with said request, (b) extracts a second account from said information record, (c) authorizes said request using said second account and said access control list, and (d) executes said request using said virtual data storage vault.