I just bought a "refurb" mac pro 8-core dual 2.8ghz machine, thinking I'd add an Airport Extreme card when it arrived Friday. Well, I've come to discover the AE card is no longer user installable: you can't even buy a compatible AE card at the Apple website. They direct you to call their 800 number, or a store. I did that and found that the card isn't user-installable: they won't sell it without doing the installation as well. Needless to say I'm livid, since this means taking my machine to an Apple store, leaving it for at least a day, and forking over $149 for what ought to be a $50 card. Anyone have suggestions as to the best 3rd party wireless cards? I'm thinking Linksys, as I've found those to be mostly bullet-proof in my Windows PC's (Apple is the company that seems to enjoy upsetting its users; I can't think of another major desktop manufacturer that makes you take your machine to a service depot to add a wireless card).