Sorry for the second post, As I posted before, I'm attempting to install a D-Link DWL-G520 PCI card into my Quicksilver G4 733--but whenever it's installed, my computer refuses to boot and all I get is a black screen. I've tried zapping the pram, but it didn't seem to make a difference. I'm wondering if anyone has had a similar problem with any kind of PCI card and what, if anything, they managed to do to fix the problem. Much thanks for any help you can give. Todd