Instructions for installing MCRead:

1)Uncompress MCReadBeta.zip

2)Move the resulting MCRead folder to Mathematica/AddOns/Applications/
or
Mathematica/AddOns/Autoload/

3) Rebuild the HelpBrowser in your copy of Mathematica
Menu- Help/RebuildHelpIndex


Documentation for MCRead will then be found in the Help Browser/AddOns/MCRead