So, now that Vista is the new hotness, it is time to get a Mac. On the iMac, if I get the standard video card, is it possible to upgrade the video card myself, or pay Apple's prices to upgrade. Anyone play WoW on their iMac? I'm looking at the 20"... MAYBE a refurb 24" and the only thing I use my computer for these days is browsing the internets, email, aim/yahoo/msn, WoW and updating my iPod. Anyone bought a refurbished iMac? My iPod was a refurb and seems to work fine enough, so I'm hoping Apple refurb computers are the same.