deny from all
Put an .hatccess file in each of these dirs and overwrite the originals if they are in there...
backup
cache
inc
plugins
data (smilies probably will not show up though)
Remove folder
convert
there's no point in having that in there. This is just a simple step from allowing people to go through your files. It will just redirect them to a 404 page or something. Also this works on most systems.
