WWW.ACEPIXS.COM . . . . . ....April 30 2008, New York City....Actors Heidi Montage and Spencer Pratt made an appearance at the 'Late Show with David Letterman' at the Ed Sullivan Theatre in midtown Manhattan....Please byline: KRISTIN CALLAHAN - ACEPIXS.COM.. . . . . . ..Ace Pictures, Inc: ..(646) 769 0430..e-mail: info@acepixs.com..web: http://www.acepixs.com