Tanfolyamok.net

Our job was to move tanfolyamok.net from the outdated phpnuke CMS to Drupal, and do it so, that the visitors and the search engines do not notice anything. We managed that successfully: we ported the registered users' database, the ads, the database with the cheat sheets, and moreover, these could be reached on the same link, as under phpnuke (this was important because the search enginges indexed the links, and it had a lot of external referrals and it the site was saved by many as a bookmark).