Dynamic Form AJAX, JAVA, PHP, MYSQL - ASAP!

I have an entry form I need completed asap. This form cannot run on an engine ie. cake or any other platform. I need the form to dynamically expand depending on what is selected without page refresh etc. Cannot be written in ASP. Needs to draw data from MYSQL db and also need basic login for admin and report generation. You must be able to start straight away and be in constant communication (Skype, MSN etc)