Hey everyone, I just made the switch to Mac a few months ago. I bought a Dual-Core 2GHz PowerMac. Anyway, I was just wondering whether it is necessary for me to get ripped off by the Apple store's outrageous graphics card prices, or whether I could just buy any PCI-Express card with the equivalent chipset from Newegg? Has anyone out there done any reports on PC-to-Mac graphics card compatibility? I haven't been able to find anything like that. Thank you! Juan.