Create wordpress plugin

Need to create a wordpress plugin to integrate our site's functionality into wordpress. A brief of what needs to be done:- 1. Just like FB connect button embed, add a script (that we'll provide) to admin section of wordpress. User will click the button and launch a popup (script does this) and make user log in into our website inside the popup. 2. After user has finished logging in, popup will close and script will send back data to the wordpress page as an event. (again just like FB login flow). You'll need to save this data into a new table created in the wordpress database. We'll tell what data needs to be saved and what table needs to be created. 3. Based on what data is saved an embed code will be added to following sections on wordpress (depending on what user has configured) a. Under each post b. Side bar c. Contact page d. About page User will have the option of choosing which of the above he wants to enable. We'll provide a default embed code for each section which will be displayed alongside and user can edit it too.