You will find the HP LaserJet 1200 Series PCL 6 Driver listed below. The HP LaserJet 1200 Series was very popular and most probably one of the most sold version in the HP range of printers. This driver in the zip file should run on most operating systems.
Always scan any drivers from the internet much like any other software. This is no different. If you are looking for other drivers then search this website for more drivers.