PHP MySQL Project

Big Picture: The Project involves modifying an existing website to manage and search various lists. the back end admin interface/infrastructure exists, however the end user search and results display pages are needed, along with some tweaking to the existing pages. Some Detail: There are 4 level of users Super Admin (user/pass) Site Admins (user/pass) Sub Admins (user/pass) End User (public) The Super Admin creates Site Admin accounts. The Site Admins, create Sub-Admin accounts for their The Sub-Admins manage their own info and list data The end user searches the data of a particular set of Sub-Admins here's what i'm imagining happening..... i am a super user and i create a site admin account for the abc company. the abc company site admin then creates 50 sub admin accounts for abc company representatives. an end user who goes to the main abc company website clicks on a link to load a search page so they can search the inventory of the 50 abc company representatives, to see which representatives have the items they are looking for. the link (on the abc company site) that the end users clicks on to load the search page (which is on my server) is something like... [login to view URL] the search page figures out via the encoding embedded in the link, which site admin account the search is requesting, which in turn loads a dynamic search page with customized with colors, headers, footers for the abc company's search page, which the abc site admin has set up in some fields on a data entry form - this is not represented in the pdf file. the end user then searches the abc company 50 representative's (sub-admin) sites inventories from this page and receives a listing of abc representatives (sub admins) whose inventory matched the search criteria. I'm looking for a coder who will suggest what other elements need to be incorporated into this project that I've overlooked in order to make it successful. I'm looking for a coder who can speak english and uses Skype.