Getting ready for JFK50

I am running in the JFK 50 Miler this Saturday (17 November 2007) I think I'm pretty much ready. I'm feeling just a little nervous and a lot excited. I expect to be on my feet for 10 hours or less. the first 16 miles are on the Appalachian Trail (AT), then 26 miles on the C&O Canal Towpath and the last 8 miles on rural rolling roads.