User Picture Enhanced portable provides a nice interface to all of your display pictures. As well as a screenshot tool which allow you to quickly add a display picture and apply it.
Full Specifications
What's new in version 2.0.3
General
ReleaseOctober 29, 2012
Date AddedOctober 29, 2012
Version2.0.3
Operating Systems
Operating SystemsWindows 2000, Windows Vista, Windows, Windows 7, Windows XP