My girlfriend has a G4 450mhz 512ram, and a 10gb HDD. Her dad bought a 250gb maxtor ide for it and eing the puter tech of the family i get to do it. Im a computer tech @ best buy but my knowledge is PC only. Never worked with a mac. So i booted up her mac, updated the OS to 10.4.2 ( is this tiger?) Then i installed the drive in the extra space, having to use the new ide cable from the maxtor supply, because the original was not long enough. Now when i boot the mac it hangs. But if i unhook the cable from the slave drive it works fine. The drive is set to cable select. One last Q, i see there is a AGP slot, can i use an older nvidia Geforce 4 4400 from a PC?