I can't find anywhere in the info re: MarketPlace purchases telling what credit cards are accepted. I'm trying to buy something using my Discover card. Is this not accepted by the MarketPlace? I keep getting to the download page and it gives me a Page Not Found error. Please make it clearly indicated somewhere in the MarketPlace which credit cards are accepted. It's difficult to know if I'm using a wrong card. The section called "About the MarketPlace" only briefly tells something about artistic quality and licensing. Nothing about credit cards. Melanie