1. Upload membership_levels.php to your site.

2. Run yoursite.com/membership_levels.php first to get a listing of membership level ID's

3. Open membership_upgrade.php
    -Change the number '1' to the ID you got from membership_levels.php
    -Change NickName 'DolphinTechs' to the admin user name of your site
    -Save the file.
    -Upload membership_upgrade.php to your site.

4. Run yoursite.com/membership_upgrade.php

5. Remove these 2 files from your site for security reasons. IMPORTANT !