examples are better than words ...
http://www.le-hiboo.com/photos/
classed by "style" ...
http://www.photos-concerts.com
Classed alphabetical
Question is ... the only way is to change MANUALLY all the cats ??? Or it's possible to call the sub categories like photos-concerts : as I can see for example with album and ftp : I see all my sub albums by alpha-beta order ...
Thanx for the answer :)