Ranking field

http://crucifierxx.angelfire.com/

On the left, I'd like to add a column which says " Rank ". It will start from the number 1, and go down to however many names I've added. I want the name to be linked with the score field, so whoever has the highest SCORE will be rank #1. Then whoever has the second highest score will be rank #2, and so on.

Any ideas on how I can do this?