My Imac G4 was put into sleep mode on Sunday evening. Monday morning our power went off and on twice suddenly. Now the Imac will NOT power up. I took it to the Apple store in SLO. They say that repairs would be very very expensive. I have data on my Imac that is very important to me, and I run an application off the Classic environment for my business. A clone of the hard drive was placed on an external drive for me by the Apple store. If I buy a G4 or G5, can I run the classic environment? Can I do this by loading 10.4 instead of the 10.5 on the machines I am looking at? I don't want to buy a new machine only to find out I cannot run my classic program. Help!