Just and FYI - Interactivitiesink.com will be closing soon. This is where several good tutorials on ride creation are located (www.Interactivitiesink.com/rct2/). If you are interesting in printing those tuts, I would suggest you use the above link to hop on over and pick them up right away.
This is also the site that has Buggy's ride editor. Again, if you want it, better get it now. I'm not sure how much longer the site will be up.