It depends.
Do you want to know which factors to use, how to convert a rating to a percentage or how to convert percentages to price?

I can help if you already have ratings.

__________________
RaceCensus - powerful system testing software.
Now with over 412,000 Metropolitan, Provincial and Country races!
http://www.propun.com.au/horse_raci...ng_systems.html
*RaceCensus now updated to 31/12/2024
Video overview of RaceCensus here:
http://www.youtube.com/watch?v=W821YP_b0Pg