I have HP Color LaserJet 3550 and I think that there are no drivers of it for Windows 7. When I plugged the printer to the system, Windows 7 started searching for the appropriate drivers. When it finished finding nothing, I tried using the Vista disk for that. This also did not work. Can anybody tell me how to set up HP Color Laserjet 3500 with Windows 7. Please help. Thanks in advance.