When you click on 'Appearance' you should be taken to a page that shows what your current theme is and what other themes are available (other themes you have installed) under a tab called 'Manage Themes'. There should be another tab called 'Install Themes' where you can install more themes.
Another way to get to that same page is to click the little arrow next to 'Appearance' to expand the menu and select 'Themes'. You will also see the other appearance options in the menu.
This topic was started on Oct 06, 2011 and has been closed due to inactivity. If you want to discuss this topic further, please create a new forum topic.