This is a single processor 1.25 Ghz MDD powermac G4, the computer that was released along with the first G5s to give buyers an OS 9 bootable option. I want to make it wireless, but I can't figure out if I need an airport extreme card or an old airport card. The reason I'm confused is this: extreme? (note footnote A) or regular? (note that the FW 800 G4, which this is not, is the only one listed) Can anyone please answer this definitively?