X0101 EFFECT 33 LIVE 2007-06-28 0000899681-07-000329 485APOS 0000820482 DREYFUS CASH MANAGEMENT PLUS INC 033-16693 S000000019 DREYFUS CASH MANAGEMENT PLUS INC C000050491 Select Shares S000000019 DREYFUS CASH MANAGEMENT PLUS INC C000050492 Service Shares