1) Login the the control panel at co.cc
2) Find the section on changing the Nameserver (NS) records.
3) Enter our nameservers (ns1.x10hosting.com & ns2.x10hosting.com)
4) Save.
5) Login to cPanel and go to the Parked Domain section.
6) Enter your domain and park it.
7) Wait a couple of hours, the change usually take between 2-12 hours to take effect, but they can take as long as 72 hours.
8) Done!