Webhosting signup script and domain registration script

We have a site already designed and we require a script to sign up to our various hosting plans. We offer basic hosting plans and reseller hosting plans using cpanel/whm, these will need to be setup automatically on signup. The script will also offer domain registration which should be linked to a domain registrar. All hosting plans/domains prices and details will be controlled by an admin area there will also be a client area for all hosting clients. Something similar to the signup process on [login to view URL] is what is required or using scripts from [login to view URL] or www.awbs.com. Please provide references of previous work