Calander website

We would like to get a website where users can signup for an account and create their calander with reminders. The reminders should be birthdays, anniversary and more. The user should be able to mark days for an e-card to his friend and the website would send that e-card automatically on that given day. The e-cards should be in some templates so we can make as many as we want and be in categories. From that same calander the user should also be able to create wall calanders which he can get as pdf files. The reminders would also be on that calander. Attached files are some templates of calanders. The user should be able to changes pictures in the wall calanders, text and text layout. We would also want to put more calander templates in the website. Backend for us: - User administration, edit, delete users, view their info and calanders. - We have a PHP programmer that can put in more templates so you would only setup few templates for e-gards and wall calanders. Users backend: - Create an account with email confirmation. - Create, edit, delete reminders. - Mark days for e-cards to friends. - Create, edit wall calanders. We have two servers one running PHP 4.3.9 and second one running PHP 5.1.6. We would like to see this in as much PHP Classes as possible, so this system can grow.