Clinically definite diagnosis of MS;

Age 18 to 60;

Capable of understanding and complying with the study protocol;

Able to read and write in English;

Visual acuity of at least 20/70 with correction in order to work on the computer screen;

Stable disease at the time of entry into the study (relapse free for at least 90 days);

Subjective concerns about their cognitive functioning (based on the Perceived Deficits Questionnaire); and

Home internet access;

Computer Assisted Cognitive Rehabilitation for Persons With Multiple Sclerosis