Control panel (Lighttpd or Apache) using current user database

I'd like a new control panel, built with the basis we already got. It still needs some work. The current control panel uses a User Dabase (we got a seperate testing database) and we'd like the users to be able to order new (web)hosting items. After the order the user should be emailed the details of his/her order. This includes ProFTPd details (generate new password and make new account via MySQL). Create a MySQL account and database. We'd like an OBE (Out of the Box Experience) from our website too, so someone selects a domain name and then clicks on register this domain, then he/she gets redirected to the control panel. More details via email.