Join the computer to the domain you just created. Right click on my computer then properties (or system in control panel). Click on the Computer Name tab, then click on the Change button, then specify the domain name you just created. Login to the domain with an account that has rights to add computers to the domain when prompted. Reboot.
If you're asking for technical help, please be sure to include all your system info, including operating system, model number, and any other specifics related to the problem. Also please exercise your best judgment when posting in the forums--revealing personal information such as your e-mail address, telephone number, and address is not recommended.
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