We need to customize the DT Register, RSEvents!Pro, Pro Events Booking, or Events Booking Joomla extension for Joomla 2.5. We are open to customizing any of these solutions. Please tell us which one you plan to customize in your proposal. Our requirements: - Visitors can pay deposit or in full. We can choose per event if a full payment or only a deposit is required. - Integration with Authorize.net AIM - If a visitor only pays a deposit, the visitor's credit card is stored and encrypted in our database (PCI compliant) so that we can process all users' credit cards for a particular event at a later time. - When our admin is ready to process payments for a class (lets say 2 weeks later), they can select the class and hit 'process payments' and all customers in that particular class with a balance (from only paying a deposit) will be charged. - 14 Days from start of class (not online registration cutoff date), visitors will be forced to pay full amount (no deposit), regardless of the admin's chosen payment options in the backend. - A teacher custom field is needed. It will have two checkboxes, one for the in-house teacher and one for guest teacher. If the guest teacher is selected, then they can enter the guest teacher's name to the right of the checbox in a text field. Additionally, if it is a guest teacher, the system will automatically require the visitor to pay in full, the pay options in the backend for the admin will be greyed out with the full amount checked.