Reformat Crontab file

I need help writing a script that will reformat a crontab file. The first thing the script is doing is a crontab -l > crontab.txt. I need the crontab.txt file to read "8.00 PM every weekday (Mon-Fri) only in Oct." instead of the orig format "0 20 * 10 1-5"

this Perl script might help you: http://www.cpan.org/authors/id/S/SB/SBURKE/crontab2english_0.71.pl