Implementing a player ranking system ?

I need to "create" a ranking system.

I've been sent some links with very complex formulae that are probably massive overkill.
http://www.phys.utk.edu/sorensen/ranking/Documentation/Sorensen_documentation_v1.pdf
http://www.masseyratings.com/theory/

I don't need the sphistication of the international chess raking system.

I would use it if I could find a something that just let me put in the results and get out the stats, but I can't find such a thing.

I have a couple touchy parts, 2 to 5 players with only one winner, and the winner will have 1 to 3 lives left.

Ugh.