Hello, I belive I read about Virtual Relity glasses being used to help PD patients walk. Has anyone more information? I guess I read it in 'Popular Science' last year, but I remembered when you began to talk about blue shaded glasses. If you are interestded, I could go to the library and get a copy of the article and post it. good luck, Elkin Fricke [log in to unmask] 140 Baystate Rd. Box 1468 Boston, MA 02215 Tel: (617) 352-6094 "Another genious foiled by an incapable assistant!" Calvin & Hobbes