Photo viewer in XP. When I go to a relative's house and they use XP (bleh) But when they show pictures of their trip using the built in photo viewer in XP. Its quick, no frills and it can blow up the picture. Is there an equivalent in OS X? Should I use picasa, or iphoto or any other app that can do the same thing. So no frills, quick, zoom in to the picture. Basically close to XP or hopefully better. Thank you