Customize bookmark icons in FireFox?

Hi,

Can anyone tell me how to or if I can customize the icons next to each bookmark in the bookmark sidebar in FireFox version0.9.2? In IE I can simply right click the bookmark and choose Properties>Change Icon, but so far I cannot find a similar feature in FireFox.

Thank you,

Mowergun

Lurking around the Mozilla forusm, I've seen that asked several times, but don't think there's away to do it.

http://forums.mozillazine.org/index.php

Thanks for your reply. Well I organized my bookmarks so that things are easier to find without custom icons. I like firefox more and more as I use it.