Converting a site to Drupal will take some time. You'll need to copy each page of your site and reset all of the links - it's about the same amount of work as moving your existing content to a completely new site. For someone unfamiliar with how Drupal works, we found that it took about 3.5 hours to move a 15 page site. The first hour and a half were spent reading instructions and getting a feel for how Drupal works. After that, it took about five to ten minutes per page (as long as you don't stop to change/edit the pages as you work). To help you, we've prepared some useful Drupal conversion hints and tips.