metzomagic.com Walkthrough
The Pandora Directive

Opening the Safe
The combination is obtained by taking the square root of each number on the 'ETS business card' you found in Malloy's room at the Garden House. Then click on the right-hand side of the dial until you reach 22, the left until 31, back on the right until you reach 15, and finally on the left again until you reach 7. The safe opens.