bleach calculator

I have read numerous posts on converting from baquacil to chlorine, what to do, how to do it, and what to use to do it. I am excited to learn that many people hate baquacil/soft swim the way that I do and have converted mid-season to a chlorine based system.I am extremely tired of spending numerous hours and dollars trying to get the water clear. I am now convinced that I am going to switch over to chlorine using the BBB method and I am going to start this process on July 5th (have to wait until after the holiday or the wife and kids will murder me). Only 1 question to start-where can I find this "bleach calculator" that I have heard so much about.

15,000 gallon AG pool w/sand filter

thanks for the help

Here is the link for download
Get BleachCalc 2.6.2 here:http://home.earthlink.net/~mwsmith70/data/BleachCalc262.exe