Updates Fiscal 2007 Guidance; to Explore Strategic Alternatives for InterTAN, Inc. RICHMOND, Va., March 28, 2007 /PRNewswire-FirstCall via COMTEX News Network/ -- Circuit City Stores, Inc. today announced a series of changes to improve financial performance largely by realigning its cost and expense structure. "We are taking a number of aggressive actions to improve our cost and expense structure, which...