Content Management System (PHP/MySQL)

I need a simple backend content management system that I can drop into an existing website with minimal code. 1. Page background gold and granite editable via jpeg image 2. Header rectangular solid graphic 3. Navigation names with sub roll out names 4. Rectangular (Flash) Banner under navigation 5. Page text content/image insert/hyperlinks 6. Photo insert on every text content page 7. Event image transition box (5 images) 8. Photo gallery 9. Audio/Video upload ## Deliverables * * *This broadcast message was sent to all bidders on Tuesday Dec 6, 2011 9:31:49 AM: I have decided to use process wire as the backend CMS - do you have any experience extending or creating custom modules for process wire?