Dear, What you can do is add the cname entry.
There are two cases.
1. If u are having dns control in co.cc
Click on manage domain
Click on set up button just near to your co.cc website
Select the second radio button called zone records
Host : Your subdomain
TTL : Leave it default
Type : A...
I have a serious issue. The site am trying to use is already in use!
Is it because I have deleted the other domain lately? Wha is the inimu time required to reactivate a deleted dns?