A Virginia man who worked as a manager at a Department of Motor Vehicles office at Springfield Mall and his wife, a former DMV clerk, were arrested yesterday by federal agents on charges of selling valid driver's licenses for as much as $3,500 each -- mostly to illegal aliens. U.S. Attorney Paul J. McNulty said Francisco J. Martinez, 57, and his wife, Miriam, 56, both of Stafford, Va., have been charged with conspiracy to commit identification fraud and conspiracy to produce Virginia driver's licenses by fraud, both felonies. If convicted, they could get 15 years in prison and fines totaling...