Printer is an ALL-in-One HP Deskject F350. The Windows PCs I have print over IP using HP Deskjet F300 Series driver. I have a Netgear PS121 USB print server that connects to the ethernet local network. I have assigned a local IP address for this printer. When we got the MAC with OS X Leopard, I was able to get it to print through the print server and my HP Deskjet. I had to use a HP Deskjet F2100 Series driver for it to work. When we upgraded the OS X to Snow Leopard v10.6, the printing stopped working. I downloaded the suggested drivers that the upgrade alerted us to from HP. So I tried several different drivers, including the generic HP Deskjet F2100, the HP Deskjet series and then the HP Deskjet F300 series that I hadn't seen before the HP driver upgrade. Nothing work, moreover, the version of the HP Deskjet F300 series says V1.02. When I use the Printer Utility, it appears that I am connecting and gives me some info, but says the HP Deskjet F300 series, using HP Inkjet driver 1.07. (??) The only additional info I get is that now I get an ERROR after it tries to print with the HP Deskjet F300 series driver, where before some drivers just que'd up the document and I had to delete it out of the print que. Other drivers like the HP Deskjet Series. 'pretends' that it sends it, but nothing. Yes, I have double-checked everything, the printer is working fine through with the Windows PCs. Any help here?