Here's how you would change the admin password for your current Drupal installation:
1. Login to your cPanel control panel and under the Databases section choose phpMyAdmin
2. Select the database that Drupal uses from the drop down menu on the left
4. Click on the SQL tab
5. In the text field on the page type the following text:
update users set pass=md5('NEWPASS') where uid = 1;
Change "NEWPASS" with the desired new adm password. Then click on the GO button and if no errors present, the Drupal password should have been changed.
