This will set the domain that's considered as the primary domain for this particular account. You can access this domain's document root by going to http://IP/~clientname. To map an ipaddress to a domain, you have to click here , go inside an ipaddress and click on 'configure domain' tab there. If you want to view a domain before the dns is setup, the best way is to create an entry for the domain in your local etc/hosts file. The path for the file on windows is c:/windows/system32/drivers/etc/hosts . Just add an entry like this: 192.168.1.32 domain.com on a separete line, and then you will be able to access the domain by typing it in your browser's url box.