Domain?

[cockhungryhoes]

I have a domain and its through one hosting company (company A) I am tring to host it on my current host(company B) . I pointed to my domain from company A to company B's server. Now I do have an existing domain with company B. Now that I have pointed the domain from company A over to B it is mirroring the other domain. I know mirrored sights are frowned upon, and its not my intention. How do I set the domain up so I can use it the proper way? I just sent up a new root folder in company B and title it the domain right? I dont want to ask company B because they will just try to sale me something. Can you host more then one domain under one account? I am pretty sure you can. I think if you couldnt it would get to confusing with like 100 domains.