Processor Upgrade Power Mac G4

I have a power mac G4 and it runs on a 552 MHz processor can it can handle the new Leppard or Tiger?

Can it be compatible with Leppord or tiger. I’m frusterated I can’t get Quick time 7 or itunes 7 it sucks and I can’t use 2nd life either, how do I keep upgrading without a lot of money going out of my pocket, I can’t afford to keep up. Can someone help me?

Tiger requires that you have built in firewire, probably the soame for Leopard when if finally gets released.

Inside powermac g4