Last Mac purchase was a 2006 Core Duo 20" iMac that I will be passing on to my daughter this month. Found a late 2006 Mac Pro with two Xeon 2.66 procs, 1GB RAM, 320 GB disk, and a 20" cinema display for $275... I know performance will be at least as good as the old iMac, but any opinions on how much longer this machine will be viable if I were to upgrade the RAM and GPU (nvidea 7300)? Also, $275 sound reasonable? I can't believe what 8GB outdated ram is going for for this machine btw, and $250 for an HD 5770? After those costs it seems cheaper to buy a Mac Mini and Newegg cheap monitor.