Hi everyone, I really need some quick help. I live in an apartment complex and they are under contract with att home entertainment. To make a long story short, they don't offer HD services. So, I bought a used H10 HD receiver on ebay, thinking I could just change the access card, and plug in an off air antenna to receive HD channels. Well, when I go to access card on the settings menu and try to change the card, it gives me a message that reads: "Access card not ready." Is it impossible to use a used directv receiver? Or is there some way to make this receiver work? All help is appreciated as I need a timely response in order to return this box if I can't use it. Thanks!