Walk it off in 30 days

I just stated back to my exercise routing a month ago, I was using my treadmill as my main source of exercise. I attempted to do a few workout dvd's that I already had and found it difficult to keep up with and they hurt my knees and ankles. I have several Leslie Sansone videos and was so excited to find her Walk if off in 30 days videos that rotates 3 days of cardio with 3 days of strength training every week! I got the dvd yesterday and started it! Wow! This is so much more intense then her other videos that I have! I am really excited to see my progress at the end of the 30 days! I have a lot of weight to lose so I know that I will continue on after this but am really excited to move onto this program!

Has anyone else done this? I am curious as to what type of results you have had. Thanks for any feedback!