The Graduate Record Examinations are administered by ETS and are required for most grad school applications. The ETS website has a ton of information regarding the tests that isn't reproduced here. Logistically, the most important thing to remember is that in order to take the tests you must register (do this early!) with a test center. The Boulder test center (code 7559) is located at: 

University of Colorado - Boulder

Broadway and Regent Drive

Willard Hall, Room 5

Campus Box 133

Boulder, Colorado 80309

United States Of America

http://colorado.edu/careerservices

(303)735-2044

There are other test centers in Colorado and throughout the country, listed on the ETS GRE website.

The most important advice that can be given about the GREs: start studying as early as possible and take the exam as early as possible (so that you may take it again if you are not happy with your score).

The General GRE is a computer-based test that is offered year-round, although you need to register ahead of time. You should register as early as possible to get the date you prefer. The cost is $160. Beginning in late 2011, the test has changed significantly. Be sure to look at the official ETS website provides the basic information and some study materials.

The CU writing center is a good resource. You can take a couple of practice exams and bring them your essays to look over.

Disclaimer: The material on this website is based upon work supported by the National Science Foundation under the AAPF program. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the fellows and do not necessarily reflect the views of the National Science Foundation.