You can control-click in the drawer area of Preview, and you'll be given choices for ordering that aren't available otherwise: Name, Path, Date, Size, Kind, and Keyword. The additional information appears below the picture preview -- and the preview image's size is now customizable in the preferences.
[robg adds: This nice addition handles a longstanding Preview complaint -- you could only get images in order if you opened them from a column-view window.]
Mac OS X Hints
http://hints.macworld.com/article.php?story=20050513184222877