The Migrate Module - Moving into your New Digs
Nearly everyone nowadays has a website, so when you want to switch platforms, how do you get your old content into the new system? In Drupal, the most powerful way to move your it is the Migrate module. More like a framework than a module, Migrate gives you a great way to move content into Drupal. Migrate has a bit of a learning cliff, er, curve, but once you figure out it's approach, it can make moving a lot of content so much easier.