I want to buy a graphics card. One of my friends told me that ati radeon hd 4670 graphics card is the best. He told me to buy it online. I searched ati radeon hd 4670 graphics card on internet and I liked its features so I have to decide to buy ati radeon hd 4670 graphics card but the problem is that the website is not taking payment from my american express card. So I want to know is there any other website or dealer from where I can buy ati radeon hd 4670 graphics card.