A customer waits his turn to exchange foreign currency in front of an electronic board showing the foreign exchange rate at the headquarters of the Korea Exchange Bank (KEB) in Seoul October 10, 2008. South Korea's finance minister will plead with U.S. bankers for extended credit lines for the country's banks as fears they might buckle under the strains of the global credit crisis hammered the stock market down as much as 9 percent. [Agencies]