A federal appeals court has refused to reconsider its decision ordering two former Harvard classmates of Facebook founder Mark Zuckerberg to accept a multimillion dollar settlement over the company. Twins Cameron and Tyler Winklevoss sued Zuckerberg, saying he stole the idea for the social networking site. Both parties reached a settlement in 2008, but the Winklevosses claim they were misled during settlement talks. Last month, a three-judge panel of the 9th U.S. Circuit Court of Appeals upheld the settlement, which calls for a $20 million cash payment and millions of dollars' worth of company stock. The Winklevosses still could appeal to the U.S. Supreme Court.