To install the application MottCalc you only need extract the file MottCalc from the rar file to your hard drive. 

The file contains the executable MottCalc.exe, some dll files needed and the file TableOfIsotopes.txt which 
holds the A,Z,spin and masses of the available isotopes. Whenever you wish to run the application just double click on the MottCalc.exe.

Warning: If the file TableOfIsotopes.txt is not located in the same directory as the MottCalc.exe the application will not run correctly.

Warning: If the filepath to the directory where MottCalc.exe and TableOfIsotopes.txt are located contains special characters (for example non-english characters)
there is a possibility that the application will not run correctly. 
