API/ASP/PHP ADVICE/Question

Just looking for answers/instructions here. ? We have a vendor who we purchased software from. ? We just purchased access to their API as well so we can write into the software. ? The software is in ASP.NET. ? I have two questions: 1. If the software is in ASP.NET, can I write the new program/pushes in PHP since it is just using an API? 2. I have been asked "please let me know when you have the website setup with the named URL in the host header value for your API installation." ? What does this mean and how do I go about doing it? I'm a fairly advanced user, just do NOT understand Windows environments and terminologies. ? I know Linux hosting environments. :) Thanks! ## Deliverables Bid. ? I accept. ? Answer my questions. ? You get paid. ? No hard labor involved.