Transfer Concerns - Need help!

Hi Folks,
I've sold me website and I am trying to transfer it over the the new hosting account provided by the person who bought it.
I posted the I.P. Address and the cpanel(FTP) details, and it still says that it hasn't finished migrating. This was 24 hrs ago, and I still haven't received the email that tells you whether it worked on not. I have a duplicate of my website on "Manage my Websites" as well.
Here is the message that now comes up when I go to website settings:
First: "this site is recently migrated. We do not recommend you modify it until the migration is complete and you have received the email to choose whether it was a success or failure".
System Error
"We noticed that you have just migrated your site! Please understand that the process is not completely finished yet. Once you've changed the nameservers, this message will disappear automatically within 24-72 hours. If you do not know how to change the nameservers, Click here to watch video 3 . When this message is gone, the transfer is completed and you can begin using your site!"
It would be great if someone could help me out!
I've sold me website and I am trying to transfer it over the the new hosting account provided by the person who bought it.
I posted the I.P. Address and the cpanel(FTP) details, and it still says that it hasn't finished migrating. This was 24 hrs ago, and I still haven't received the email that tells you whether it worked on not. I have a duplicate of my website on "Manage my Websites" as well.
Here is the message that now comes up when I go to website settings:
First: "this site is recently migrated. We do not recommend you modify it until the migration is complete and you have received the email to choose whether it was a success or failure".
System Error
"We noticed that you have just migrated your site! Please understand that the process is not completely finished yet. Once you've changed the nameservers, this message will disappear automatically within 24-72 hours. If you do not know how to change the nameservers, Click here to watch video 3 . When this message is gone, the transfer is completed and you can begin using your site!"
It would be great if someone could help me out!

Does it mean that I need to change my nameserver...and how do I do that?!