Error 1046

Hi !

My problem is the following:

MySQL Error : Database Error
Error Number: 1046 No Database Selected
Date : Sat, June 15, 2002 02:08:12
Browser : Mozilla/4.0 (compatible; MSIE 6.0; Windows 9

Referer :
PHP Version : 4.1.2
OS : Linux
Server : Apache/1.3.24 (Unix) PHP/4.1.2
Script Name : /nuevo/index.php

I take the script in php lonely and it runs OK, but the same script with power template, included as php program it produces this error.

Any can I help me?

Thank you