Windows 2003 Sp1 Certificate error.

Hi techyv experts,
Windows 2003 Sp1 Certificate error.
When I enable the certificate service, I get the below error message.
Can any experts help me fix this issue.

Certificate Request Wizard
The wizard cannot be started because of one or more of the following conditions:
-There are no trusted certification authorities (CAs) available.
-You do not have the permissions to request certificates from the available CAs.
-The available CAs issue certificates for which you do not have permissions.
Thank you
