It’s sort of involved, but not too bad.

1. Log in to Crystaltech’s webcontrol center at: http://www.webcontrolcenter.com/
2. Click on DNS>Domain Registration Admin
3. For the domain in question, select the Registry Key Code, press Ctrl-C to copy it to the clipboard, and click on the Manage link. This is basically a link to Melbourne IT.
4. On Melbourne’s site, enter the domain name and press Ctrl-V to paste the registry key code.
5. Click on Transfer Management to Melbourne and follow those steps.
6. View all domains, and click on the domain in question to Manage it.
7. Click on Change Nameservers and set them to ns1.bluehost.com and ns2.bluehost.com, and click Continue.
8. Click on View Domain Password. It will appear in orange at the top-right of the screen. Took me a sec to find it at first! Select it and Copy it to the clipboard.
9. Log in to Bluehost’s control center at: http://www.bluehost.com/
10. Click on Transfer Domain.
11. Enter the domain name in question and click Proceed.
12. Paste the Registry Auth Code into the box and click Email The Code. Now a Proceed button should appear at the very bottom of this long page.
13. Click the Proceed button!
14. Pay for the transfer and 1 year extension ($10).
15. Go back to the Bluehost control panel and click on Addon Domains. Fill out the form and click Add Domain.
16. Go back to Crystaltech’s webcontrol center and remove the domain from DNS>Extra Domain Admin by clicking Delete.

Bye.