Just in case:
Elementary:
http://www.gravimetricstudios.com/softw ... /index.cfm
Purgatorium:
http://d1jlserver.dnsalias.net/CCDev2/p ... cfm?fid=27
Something useful as well:
http://nldc.interfix.net/calculator
As far as the formula, it downloads just fine man. I am think there may be an error in your settings (or how you are downloading the file) cause it works. If you cannot get it by tonight let me know and I will throw it on a web page I have.