You can find this font for free here:
Or, do what I did -- a Google search for "Tempus Sans". Don't be discouraged -- a lot of the resulting links are offering this font for sale, but if you keep looking, you'll find a free copy. But, do it! This font is worth the effort. (Note: a lot of these sites include detailed installation instructions).
P.S. I love looking through fonts, but I rarely find one that I like as much as this one. If you have suggestions (especially free & legal ones), please send them to me. Thanks.
(Remember -- feedback is always appreciated)