In my quest to figure out how the rankings work, one of the things that has confused me was when I checked out the ranking points for Wimbledon, and found it to have similar ranking points to other ATP events (200 points for the winner). http://www.atptennis.com/en/tournaments/profile/540.asp

http://www.atptennis.com/en/tournaments/profile/418.asp

although, I've realised that the points breakdown for Wimbledon, the US Open (and possibly some other tournaments) must be wrong, after looking at Roger Federer's scarily impressive points breakdown profile (http://www.atptennis.com/3/en/players/playerprofiles/pointsbreakdown.asp?player=F324) and seeing the 1,000 points for the grand slams which he's won.

I actually think I have a good idea as to how the rankings work now, although, I'm going to try and read up a little bit more.