Strength training at home - need help

Hey guys,

Here's a little background info. Back in my early 20s I lifted weights regularly in a gym with the help of a trainer. It was a no frills place and the owner trained me for free as part of my membership. I was overweight at the time, probably about the same size I am now. We lifted heavy and I put on a lot of muscle. My shoulders got too big for my suit jackets, etc. I got a little too bulky instead of just toning up. Since then, I've lifted on and off on my own, mostly on the circuit machines at gyms. I stopped lifting completely a few years ago when I started running instead. Foot surgeries and having a baby stopped my workouts - cardio and strength - completely. Since having my son, I've dropped about 30 lbs through diet alone.

Now my baby is 9 months old and I just started working out again. I no longer have a gym membership but I have a great treadmill for cardio, plus I'm walking/running outside. What's throwing me is the strength training component. I have at least 40 or so more pounds to lose and I would like to incorporate some sort of simple strength training that I could do at home. Because of the baby and my work schedule, I don't have a lot of time. I would like to stick to walking/running for my cardio and find a video, book, etc. with an easy to follow toning routine. Preferably, something I could do with minimal equipment or outlay of cash. Maybe bodyweight exercises?

Can anybody recommend a simple routine/dvd/book/plan, etc? Something I could do 2-3 times a week within about a 40 minute time period would be perfect. Thanks in advance.