I am listening to Robert Ullrey’s running podcasts (free on iTunes) http://www.ullreys.com/robert/Podcasts/
which are geared to have you going from couch potato to 5K in 10 weeks. I’m finishing Week 2 and getting ready for Week 3. So far, it’s been fairly painless and fun for me to get back into jogging and being comfortable w/ more than walking. Used to run 30 miles a week. Got injured. This is my first serious running after 2 years! I’m looking forward to being able to run 30 minutes straight. I miss my runner’s high! :)