I am running Mach3 on 32 bit windows vista and the driver test will not work, I looked in the device manager and saw mach3 pulsing engine, clicked on that and saw the driver but it has a question mark against it, when i go to the Mach3 folder i see the driver test icon, i right click on it and run as administrator, then a box appears on my screen asking me if i want to run the program, I click yes, and the screen just flickers and the program doesnt start, when i was running on xp it all worked fine, any ideas on this one please.