FuegoCalc Readme
1. Just place the file called "FuegoCalc.exe" anywhere in your PC and start using it.
2. If the application doesn't starts, open the file called "dotNetFx40_Full_setup.exe" 
to install "Microsoft's .Net Framework" and try opening FuegoCalc after the installation has finished.

For more info goto http://fuegosoftware.com/FuegoCalc/Documentation.html