I recently purchased an N800, and have been installing some new apps. I downloaded a vista-12pt theme from garage.maemo.org, and it worked fine. However, I didn't like it, so I decided to uninstall. Problem is whenever I try this from app manager it says "unable to unistall". I tried using xterm under root, with "dpkg -r" and "apt-get -f remove" and at the end of the former it says package doesn't exist.
I have little experience with terminal, most of it comes from using ubuntu, which isn't my main OS. Any help would be appreciated.

Btw, love the device so far!