Apologize for another topic on printing but I did not find a solution in the emails I researched on the forum. After I installed Leopard on my macbook, the HP photosmart 8050 printer worked via USB. But then I installed the driver on my windows based desktop and either that messed it up or a software update on the macbook but now the printer does not work. I uninstalled the desktop driver thinking that the macbook will automatically refresh, had the macbook's hard drive reformatted and leopard reinstalled and even updated the software last night but I cannot even see the list of printers/drivers in the system preferences -> printers & faxes. I have emailed HP but have not heard yet. Any solutions/suggestions? Thanks!