If you are talking about knet.co.cc , you have to go to co.cc, register it yourself (most are Free, some "premium" cost $$), and then use their tools to set the nameservers to ns1.x10hosting.com and ns2.x10hosting.com
well the one i wanted was not free so i changed my primary domain to knet.x10.mx but i am still waiting for it to get changed back. it is still set to knet.co.cc. is there anything on your end that you can do?
sorry i don't want to be a pain in the ass, i am just confused that it takes so long. when i changed it for the first time it was all taken care of within 3 hours, now it's been 3 days and i am still waiting to put my files up