PHP, JAVASCRIPT and MYSQL EXPERT

I have a content management script that needs to be changed a bit in order to do the following: 1) in the admin control panel I'd like to be able to see a list of nav bar sections next to a checkbox so that I can toggle on/off those sections that I don't want to see in the nav bar 2) in the admin nav bar, there's a section called configuration and below that section a subsection called Newsletter. I want to remove this title from being a subsection in the nav bar and move it to be a full section instead. I also want to rename it eMail Campaigns 3) the existing Newsletter/eMail Campaign section needs to be adjusted. Today it allows me to create an email using an html editor and send it out to a list of registered users. I want to make it work exactly as this script [login to view URL] or I can purchase this script and you'll need to make it work with my existing content management script 4) I want to create a new section called Landing Pages that will allow me to create (using the existing html editor) and track my landing pages.