what you have to do is custom install all the ethernet drivers for the mac. when it gets to the install portion of the os cd click on customize and then click on the grey rectangle on the top next to the mac os 9 name that has a checkmark by it and you will get a drop down menu that gives you options recomended install, custom install, custom remove and click custom install. then go to the network and connectvity or whatever it calls it and click the arrow to the left of it and then go to ethernet and checkmark that and then you can start installing the os. hope this helps