Hi, i got this g3 at a flea market for $10 this summer it has a G4 450MHZ upgraded CPU in it, it did not come with a hard drive or ram so i put a old 40Gb Hd in it and got a Gig of pc133 ram off ebay for $10. only thing not so good is the ati rage 128 GL it works fine but it is a little slow. it runs fast under tiger but now i want to push it to Leopard i seen a youtube video of leopard running on a g4 upgraded Powermac 8500, so i know it can be done on my g3 (g4) i just need a little help on how to get leopard to install i have a retail Leopard DVD and have a spare combo drive from a dead emac i can use in the g3. this mac was the 350Mhz version before it was upgraded.