Athanassios Mavrogeorgiadis wrote: Can anyone know why the Andrew M. Errington PROG84 don't work with WIN NT 3.51 It works fine with my win95 but not with the Wint NT. -- Hi, It doesn't work because it is not intended to work. The problem is that the parallel port driver DLL writes directly to the hardware registers, something that NT explicitly forbids. Any serial-port based programmer ought to work however. Regards, Andy (the other one) --- Andrew M Errington Software Engineer Synaptics, Inc.