This last Sunday was my third attempt at the summit and I finally made it. Thanks to everyones responses to my altitude sickness question a couple of weeks ago because I believe this helped me. I did decide to use the Diamox, but cut the prescription in half. I never once had any problems with my legs giving out this time, per your suggestions I ate a lot of high carb treats that contained hardly any fat. What an incredible view from the top and I can't wait to do it next year.