I have a new early 08 MBP laptop (Leopard) and a G4 tower (Tiger) using IPhoto 08. When out of town I have added photos to my laptop. I have also added different new photos to my tower. Is there a software way to update both computers to have the same photos? I have heard the term bi-directional (my Palm Treo does this). In the case of my Treo, if I have new info in both my phone and computer, both will be updated to match each other. Now I need to do that same syncing concept between both of my computers for IPhoto (I do not have .mac). Thanks in advance for your help!