I thought you all would find this interesting. this person has built a desk to fit on the treadmill and is "walking across American" while he works. Check it out at:
I walked 1.7 miles on the treadmill today - I'm a little frustrated because it is so hot here and I am using the treadmill inside. I think I enjoy walking outside more! I need to get my ticker to readjust also as I thought I might want to do minutes, but I like the mileage better.
You walkers are really inspiring me!