configuration window Rated 5 out of 5 stars

I can't find the configuration window. Can you please tell me where I can find it. I want to try adding a personas skin.

I have verion 8.0 from FireFox

update: after a restart from my computer I now can see the option to change Ozygen KDE!

This review is for a previous version of the add-on (3.5.1).