Advanced Plugin for WHMCS

Greetings. I want a module/plugin for WHMCS. You can see the WHMCS script on [login to view URL] What I want is a plugin/module which can do the following. I want to make it possible to do so users can sign up as resellers, and then resell trought a subdomain of another site, and then sell our hosting services. My domain is for example [login to view URL], and then my other domain is for example [login to view URL], then the users should be able to get a subdomain of [login to view URL], like myhost.resellerhosting.com. At that site users should be able to resell my hosting services from hostingservices.com. It should by default be set to one price, and then the resellers should be able to make a addiational price, which will go instantly to their account when someone purchase this. I hope you understand me. Please let me know if you have any questions.