hi everyone. i'm very new to MAC systems and i really need some help. I recently got a second generation IMAC G3 from a friend. it works perfectly but i'm starting to hear noises from the hard drive which mean there will be a failure soon. I've got a Maxtor 40GB Fireball that i'm trying to install. I se the jumper settings to the same as the original drive but when i start it up and pop in the OS X CD, there is no drive for me to select an installation destination. can anyone give me a few pointers? any help would be much appreciated.