If you are upgrading, make sure that you do NOT overwrite datecountdowndates.php! Also, make sure that the files are placed in the folder “wp-content/plugins/peters-date-countdown”
Then, paste this code wherever you wish to display the countdowns:
<?php countdown_callit(); ?>
If you want to call a specific countdown, enter the number of the countdown item that you want to display in parentheses, such as this:
<?php countdown_callit(3); ?>
Alternatively, you can manage it like a normal widget in WordPress.
Please visit the plugin page at http://www.theblog.ca/date-countdown with any questions.