In order to get transfers up and rolling, you'll need to transfer your domain's name servers to the appropriate name servers, based on your host.
When your account was first created, you would have received an email with the DNS server information. That is the information you will need to change the nameservers which your domain is pointed to.
We can help you if you're not sure how to. Just let us know who you have your domain registered with in a help desk ticket along with any information including your login username and password from that account!