> Does anyone have any recommendations on an out of the box calendar > application with built-in eCommerce or perhaps a thought on how to hook > a payment function into WebCalendar. The nice thing about WebCalendar > is that the PHP code is legible and doable. Check out Drupal: http://drupal.org/project/airplane_reservation http://drupal.org/project/openresort http://drupal.org/project/ecommerce Calendars, events, and ecommerce I have used. OpenResort and airplane_reservation I have not but they may well have what you need. PHP/MySQL and easy to build upon. :) Fred