Custom user registering website script

Hi everyone, I need someone to customise a registering and login script that is used in a php cms. The cms in question is php-nuke version 7.6.0.2.9 I'll describe my views but am open to advice and ideas if u think of a beter way, only the application and crypting is a requirement. You will need to implement a decrypt class known as rc4 vs 3. I can provide the cms scripts + the rc4 crypt/decrypt class if needed. I'll try to be as informative as possible to explain what i want so u can make a concrete bid. First of all, i want to use that cms as portal to subwebsites that will be powered by php-nuke aswell. I want to use a special method for new users to register on the website and disable them from registering directly on the site. New users will have to sign up with a client side application that is currently under development. This application will be used for registration and login client at same time. The details send by the app. to the website will be encrypted with the rc4 crypt/decrypt class. Upon Registration with the app., new users will have to enter Desired username, password and e-mail details, and upon sending details the app is gathering a hardware guid and sends it all together to the website registering pages. The registering pages on the site first needs to intercept the crypted data and decrypt it before it hits the input fields used for online registration. When the user have created an account and wish to login, they'll have to use the application as well and enter their username and password to login. Upon sending login data, the app is gathering the hardware guid again and sends it, together with the user details to login page on the site. Username and password r veryfied by the site aswell as the hardware guid. If user isnt recognised or banned, he'ill be forwarded to registering page or will get a message for being banned. The form used on the registering page doesnt have an input field for the guid yet, so it will have to be added. I don't believe the php-nuke cms has a guid table yet so this will have to be created by u in order for the guid to be stored in the mysql tables. The Cms provides a feature to ban users by ip, however with the implementation of a guid i will have this script in the cms to be modified aswell to ban users by their guid. ====================================================== Briefly summed up, i'll need u to; 1. Customise php-nuke cms registering page. 2. Customise php-nuke cms login page. 3. Customise php-nuke cms ban script. 4. Edit php-nuke cms sql file to add additional tables for futur installs, and/or create new table directly on site database. 5. Provide a detailed text note of which changes u've made in the scripts for me to use as reference for futur modifications. U can have a look at what the cms looks like at the following adress : [login to view URL] Create an account if u wish to have an idea of how the actual registering method works. ====================================================== Thats it globally, i hope to have this job cleared as soon as possible and look forward to work with u who ever u are. Short time frame is a plus but cost will mostlikely determine my pick. Good luck to all and thanks in advance, sincerily, TacTiXs.