I have followed various hints on printing to unsupported printers, however, Istill cannot print to my printer. I have an Airport extreme base station and an HP Deskjet 870Cxi (this is an unsupported printer without an osx driver). I have downloaded and installed the ghostcript and HPijs files. I was able to successfully add the printer as suggested, however every time I print to it, I receive retry errors... it keeps retrying to print forever. I am on 10.3.1. Can anyone help?