Redmine Whining Plugin on bitnami which runs on windows

I'm trying to install Redmine Whining Plugin which runs on bitnami on Windows 7

http://redmine.debuntu.org/projects/redmine-whining/wiki How can I do this cron job ?

1. Create a cron job with a line similar to this: 0 7 * * 1,2,3,4,5 www-data cd /path/to/redmine && /usr/bin/rake redmine:send_whining days=7 RAILS_ENV="production"

I'm running this on Windows 7? any idea ? You help is highly appreciated!