I have a MacPro 1.1 and I'm trying to flash an XFX ZWFC 4870 1GB card. When I plug in the card to slot 2 with both extra power cables in, I get a kernal panic and have to shut down. Without the power cables in, the fan goes nuts and my computer starts, but the card does not appear in the systems profile. After doing some reading, it appears that I need to flash it in DOS somehow? If so, how the heck do I do that? As a side note, i found this program called DOSbox. Can i use that to flash the card?