This might be old news to some, but nevertheless, for those of you who haven't experienced the Xpansion Kit on the DD (considering it's nothing cheap) here's a good alternative. My (our?) good friends over at 64DD.com have the news. http://64dd.emedian.net/64dd.net/modules/news/article.php?storyid=30 I haven't tried this (PC track editor) myself, but as a fan of the 64DD version and Xpansion kit in general, I suggest you go for it without second thought. However, to my understanding, the level editor patches and replaces the original levels, and does NOT make the DD option available (thus the Super Cat, Super Stingray and Super Falcon are vehicles you ll still only get with the proper 64DD Xpansion Kit). Post your impressions!