Unzipped a .rar file, and now I've got problems.?

I've downloaded a Torrent (Garry Kasparov's How to play the Najdorf vol. 1) (And I torrented because I couldn't find a supplier to buy from before you complain!) And It's torrented successfully as a .rar file. I've unzipped it using Winrar. However because it's a chess video, it should have a chess base viewer alongside the video of Garry Kasparov with his commentary, playing out the moves which he is talking about. When I've opened the rar file these 'Chess files' Which seem to be all the respective parts of the actual chess viewer part of the download as a whole, are all the individual bits. I need them together with the Avi File of Garry kasparov and his commentary, but I can't figure out how to effectively 'Join the Avi file with the Chess base bits' if you see what I mean. Any ideas on this would be appreciated!