Well, take a look at the whole situation.. ARe you saying its a visa, when its a mastercard?. Are your numbers you are entering correct?. Are you inputting the numbers properly, many sites, most of them want you to enter the card numbers without dashes, just as one long number. Is the expiration date being input properly?. Usually they want it it the month year format, such as : 0106 or 01-2006. Is the card expired?. When they ask for the "code" are you turning the card over and looking at the last three numbers, sometimes four at the end of the numbers?. . Is the name on the card exactly as the name you are using on what ever site it is?. . Just go over it all carefully..........many times the zip code of your mailing address is the key factor here.......... . Try it again, and if you still get the same message, turn the card over, and call the number on the back and ask for customer service and tell them what is going on, they'll help you out as they can usually see attempts that were unsecessfully made to use the card.................