Well it would technically be 23.976 to 24 or 29.97 to 30 but I think you already get my point. There was an article on wiki about moving image formats and how it is apparently possible to speed up 23.976 fps video to 24, it just didn't say how this could be accomplished.

In regards to the whole refresh rate / frame rate confusion, whenever I watch HD quicktime trailers the info says it's a 23.98 fps file but it's playing at 24.00. So again, I don't quite understand what the computer is doing.