> Include: .jpg, .jpeg, .gif, .bmp, .png
> Exclude: Everything else. .html, .shtml, .php, .css,
> .txt, .js, .swf and whatever else there is I can't
> think of.
> Folders: www.site.com/images/ and 4 subfolders deep
> (www.site.com/images/folder1/folder2/folder3/folder4
> )
> 
> I would need the subfolders past '/images/' to be
> variable because there's many folders and they're
> all different names. /images/ is the only common
> denominator.


I should have also asked what order your filters were in because that plays a
big role.  If you have the rule

-*/.thumbnails/*

as last then it will work (at least, it should...).  Looking at your
requirements, the following rules might be want you need.  However this does
assume that all the images and images directories are accessible from your
starting URLs because -* is excluding all other webpages which may contain the
image links.

-*
+*/images/*
+*.jpg +*.jpeg +*.gif +*.bmp +*.png
-*/.thumbnails/*