I just bought an HP 7280 all-in-one printer, which has a paper tray and a photo paper tray. I cannot print from the photo paper tray from my iMac (10.4, iPhoto 2.0). All of the prints come out on paper from the regular paper tray. If I use the HP software, I can print out from the photo paper tray. Any ideas on how to get photo prints from iPhoto? Thanks.