I was never too current with the "model / family" IDs that Apple sometimes uses. Either way, you'll probably need to give Apple a call, call your local Genuis Bar, or visit a local Apple Authorized Sales/Service provider in your area. They should be able to replace the card. (free if under warranty still) Otherwise the card probably is under $100, tho hard to say what they'll charge you for labor. (all assuming my diagnosis was correct)
