After upgrading to Ubuntu 11.10 I had to remove Unity since it was crashing a lot. Apparently I messed up a lot with it because now my computer just looks ugly. Anyway I could instal gnome-session-fallback and now I restored the main usability to my system. Since the GUI now looks really ugly I've tried to change the theme, but with no success.
So my question is: How can install and change themes for my Gnome Classic (no effects) session in Ubuntu 11.10. I've tried GnomeTweakTools but it doesn't seem to work. Thanks a lot for your help in advance. Cheers, -Luca