Ok I updated to Tiger and now it works fine, I have some questions as a new mac user. Is the PCI Radeon 7000 I popped in fine? I didn't install drivers. Doews Tiger already have good ones? Second I have loads of ram some of it pc100 and others pc133 I have 4 sticks of ram in the G4 one of the pc133 and the others pc100, does a mac like a pc slow down the faster stick to the slower sticks speeds, will it run right? On the topic of ram, what is a app that will test my ram to make sure it is good?