I hear a lot about "flashing" and "taping" of graphics cards in the forum. I think I know what flashing is, it's when you replace the firmware of a PC graphics card with the Mac version so you can use in Mac, but I'd like some more info of this. And why is there a different card for Mac or PC? Is it because Mac uses OpenFirmware and PC uses BIOS? Taping is when you put a piece of tape on a pin(s) of the graphics card so it doesn't make contact, but why do you need to tape it? Also, can someone make a list of all the graphics cards that can be used in PPC Macs?