Construction of function point IP for subdomain and creating hosting package.

I am building a website just like automatically generated system [login to view URL], allowing users to subscribe and have the right website with subdomain [login to view URL] form, and now I need a you perfect the 2 remaining functions are: 1. Point the IP or DNS domain name: I have subdomain is [login to view URL], I bought the domain [login to view URL] and now I just have to point IP xx. xx. xx. xx, when I on my website will show [login to view URL] instead subdomain. 2. Create the package use according to bandwidth and capacity: I can create the service package according to bandwidth and capacity, such Basic Package (salary is 300 MB, 40 GB bandwidth), Diamond package (1 GB space, unlimited bandwidth). In the admin page of each user were to view the capacity and bandwidth used. In senior management page to view the capacity and bandwidth of all users.