Mate, it's taken me a while to get it to work - and i'm still working on it (though i have stopped after completing "part 1" of my initial plan).
for reference -
http://www.MelbourneUnderage.com/photos/
I'm about to push it to anotehr stage, by either completely redoing the cat_bits, and add an additional cat_bit_level, as when you go to the sub-category "clubbing 2005" the layout is completely wrong - and if i change THAT, then it will change the layout when you enter to look at a category with photos.
Ontop of that - i need to chuck my CMPS menu on the left, and alter the layout a bit more.
It takes a bit of "kick in the nuts" and "hit and miss", and some advanced html knowledge to remember exactly what you are moving, and where the end of a table is - sort of thing.
But the system is made quite well in one instance, where you can change the gallery to look like what ever you want (like mine) and still spend less than 1 hour upgrading the gallery to a new version (i just haven't been bothered updating mine yet.)
Hope that helps