Dumb question...I have the DVD tiger upgrade. I am on a G4 Power Mac. I put the DVD in and it spits it back out. I put any general DVD in and it does not play. I look in my apps and the iDVD App is in OS9 system folder. I double click and I get a pop up saying that Classic does not support this Application. I am operating in OSX. What does this mean? Thanks!