Write a Wordpress dynamic contact form plugin

need a plugin for Wordpress (current version) that will create a contact form that has certain fields dynamically populated from a separate database. fields include name, email, etc. the population needs to be done as the user types (rather than populating a drop down list) and start once 3 characters have been entered. once the form is submitted, it must generate an email to the webmaster with all content from the form, an email to the user verifying receipt, and write the information into a database. this plugin must be easily editable (adding/removing form fields), and must allow multiple forms to operate on the site. i need to have this done within 24-48 hours at most.