title: enable a drupal theme manually (which file to modify)
body: <p>Ok, let's say i'm a big newby on drupal, and that i want to load a theme (which actually should be enabled, and displaying - currently not). And that i don't have access to the admin part of the install (old site, etc… don't ask why).</p>
  
  <p>Looking for someone to specify me the files to change in order to make this theme work.
  Thanks</p>
  
  <p>(We could talk about clearing the cache "manually" too… hate sometimes those all-in-the-admin stuffs, but well…)</p>