I'm using Netbeans to develop with Drupal. I'm trying to let Netbeans get drupal core and modules from the repository on drupal.org to my local working copy. Problem is: I already have a working copy that is not versioned yet. When I try to checkout a copy from drupal.org, Netbeans asks if I want to create a new project - I don't. How can I turn my local copy into a "checked out" working copy?