Cathy, question? Do you walk on your treadmill or jog? I have never really got on well with treadmills in the past, find when I don't look at my feet and try to keep coordinated, I have a tendancy to fall off and look extremely daft in the middle of a gym.
Well done on all your miles you've put in, you're doing great. I didn't get to curves today, I've got a jippy tum, not feeling very nice at all so thought I'd better give it a miss. NO walk either as number one son has volunteered to walk Pen and Lew and Ijust got in my jammies, ready for a run to the loo again, or hopefully, a night on the couch watching Friends and later ER.

hope you're feeling better Chris 
but there is a program on my treadmill where i walk at 3.5mph for 2mins and then jog at 5mph for 1min..that is a good workout
At the moment i'm using the hillwalking program and the weightloss one and i'm getting a little faster too
i can do the hillwalking program at a speed of 4.1mph.
Mall day
so did an extra mile today for a total of 4mls 

i've got to do some today..don't like missing 2 days in a row.