I just purchased a new HP computer for my screen printing buisness and can't get the printer driver worked out. When I plug the printer in the computer goes out and gets its own. Problem is that it's the wrong one. It'll print and all but I need a post script driver for making film positives. I've down loaded a PS driver but I think it's wrong also. Someone told me that a driver that was a "exe" file wouldn't work in Windows 7 and that's what I down loaded. Got any ideas?