You can use your domain with your account.
First of all, you should point the domain nameservers to:
ns1.x10hosting.com
ns2.x10hosting.com
Then, you can:
Set it as your main domain: Go to your account management panel (
http://x10hosting.com/account), and there you have the option to change the main domain.
Park the domain: You can Park it from cPanel and your main domain will stay as
http://tautos.exofire.net/ but you'll be able to access your website by
http://www.kitcarland.co.uk/ too.
