Register a user / domain using the DreamScape reseller portal API from a web page -- 2

We are a DreamScape (Crazy Domains) domain reseller, and there is an API to access the DreamScape portal that allows you to create users and register domains. We require to connect to the API and allow you to; 1. Check if a user exists (log them in) or create a new user 2. Search for a domain (check if it's available - DomainCheck, DomainInfo) 3. Allocate it to the user 4. Purchase the domain In addition, some users already have their own domain, so we would like to be able to check an existing domain, contact details (via WhoIS) and also see where it's pointed to (DNS) checking the following information; 1. WhoIs information 2. NameServers 3. Other DNS entries for the domain There is a DreamScape API which can be viewed via the following link; [login to view URL] Alternatively there is also another method that can be used to do some of the above tasks (WHMCS) which can be viewed via the following link; [login to view URL] We are happy for the code to be written in PHP or ASP.NET, and we require a TEST PAGE that allows us to test the above functionality is working correctly. Your testing will be on your own server with your own credentials. We will then test on our server. I look forward to hearing from you.