 This study will examine the effects of the drug Ropinirole on spinal cord reflexes and on symptoms of restless legs syndrome RLS. Patients with RLS have uncomfortable sensations in the legs, usually in the evening or early part of the night. Most patients also have periodic involuntary leg movements. The condition tends to worsen over time, resulting in severe discomfort and sleep disturbances. Ropinirole affects chemical messengers thought to be involved in spinal cord function and in modulating RLS symptoms. 