So once upon a time i raged at my iMac G3 because it was being stupid and slow. Long story short i ended up deleting my "Finder" and a whole bunch of other system files. Can't remember exactly what ones, though. So I took to the internet on my PC the next day, downloaded Xubuntu for PowerPC, put it on a DVD-ROM, and inserted it into my iMac. The only thing that shows up on my screen when I attempt to boot up is a what looks like a .gif of a folder and on the folder is a flashing question mark and the little mac symbol of the face that looks like another face xD. Any help here would be appreciated.