I was quite astonished when I upgraded to 2004 from 2002. I thought I was two releases behind, so it would be prudent to upgrade. While the user interface changes (I question if it was for the better: think fisher price toys), so much functionality is either now optional, forced, or not available in lieu of "neat" stuff which honestly is just dumbed down controls for a low-tech audience. For a list of this stuff, check out the other reviews as I have nothing new to add and several folks say it much better. In then end, I would question first why you think you need this upgrade? and if not an upgrade, but a first time purchase, save money and find an old version on ebay -- it's worth it.