There are a lot of Domain Providers that uses a Control Panel like that:
We have to change the Site type. That's mean, go to Sites option:
Click on Edit button:
And change the service to Forward:
In the form that will appears, you have to select a Redirect type Server redirect (301) and in the target url you have to write the url of your domain with www:
Click on Save Button and go back to the menu. Now we have to change other setting in DNS option:
Select your domain in this box:
Search a CNAME record in the list and change the value to domains.mikz.com, if there isn't any CNAME record, add one with the value domains.mikz.com.
That's all! Your domain is pointing to our server and your blog will be renamed to your domain name.