It depends on where you live. In New York state where I lived I used the services of VESID (Vocational and Educational Services for Individuals with Disabilities). There would be a similiar service in each state. One good way to find out about them is your local independent living center. This can help you find in the one nearest to you as there is one in each borough:
http://www.ilru.org/html/publications/directory/index.html
Can you go into more detail?