GMAC's site provides a general overview of how to register for the exam and request specific accomodations if you have a disability. Also, be sure to read this document: Supplement for Test Takers with Disabilities. GMAC will accomodate you if any of these disabilities apply to you:
- Learning Disabilities
- Attention Deficit/Hyperactivity Disorder (ADHD)
- Physical or Systemic Disabilities
- Psychiatric Disabilities
- Deafness or Hard-of-Hearing Disabilities
- Blindness or Low-Vision Disabilities
If you fall into one of the above camps, GMAC and Pearson VUE (the company that runs the test centers where you will take the GMAT) can make a variety of accommodations. including giving you more time on the exam, extended rest breaks during the exam, a reader who can read test questions aloud to you, or enlarged fonts on the computer screen. Overall, GMAC wants the GMAT to measure your true ability, and does not want it to be clouded by a disability that you may have.
If you are preparing for the GMAT now, Veritas Prep offers a variety of flexible GMAT tutoring options in dozens of cities around the world.