Here's the wiki article that tells you how to view your site here and make sure everything's okay... before switching from your own host:
Also, hosting & domain registration are two different things. If you want to use the free domain registration for that domain, you will just need to transfer it here--whether it's registered with Globat, Godaddy, or anyone else.
If you just want to host it here, then you just need to modify the nameservers in your registrar's control panel. Change them to:
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