NEW YORK (AP) - Billy Crystal is going to help guide the construction of the September 11th memorial. He's been named to the board of directors of the National September 11th Memorial and Museum. That's the foundation raising money to build the memorial to the 2001 terrorist attacks. Crystal becomes the 45th member of the board, joining his "Analyze This" co-star Robert De Niro. Crystal took part in a benefit concert for New York City a month after the terror attacks. He also has co-hosted eight Comic Relief telethons on HBO to raise money for the homeless.