ACDSee will let you use their program in a Sponsored mode. You must agree to log on and accept some advertising. It is an ecxellent program with the caveat that version 3.1 is the one being recomended. They have put out a 4.0 version and it is getting a fair bit of bad comment in
www.dpreview.net . That is a great site for digital photography by the way.
ACDSee have a trial download.
Good luck.