What is the most important companent in buying a video card. I know there a combinations of a few, but i have a 4x AGP slot, i know PCI express would be better but i dont want to but a new Motherboard, What is better, 256 MB and 128 bit or 128 MB and 256 Bit i dont know what the difference. Is there anything else that is more important? Curious b/c i want to buy a new videocard between 150 and 230 Dollars. What are your suggestions, If you have links, that would be cool too, preferably newegg.com but i dont want to be pushy.