Most people take their actual FAA exams at one of the 300+ PSI testing centers nationwide.
Your local PSI center may be co-located with your Flight School / Mechanic School / FBO. The tests are administered on a computer. PSI collects a fee for their services - we have nothing to do with this.
Please visit http://www.psiexams.com/ for more information or to find a testing center near you. They also have some international locations.