Did you get the right shoes for you running gait ? are you running at a comfortable pace ? or too fast ??

I just started the C25K program on the 8/17 and I'm also having some knee soreness issues.  I'd say baby your knees, and spend a longer time warming up than normal.  Here's what I've been doing to baby my knees:

-Spend a much longer time warming up

-Run on a softer surface (not concrete!) look for dirt, gravel, or a track meant for running

-Stretch before and after your workout, but especially after. Look for stretches for knee pain.

-use the RICE technique (rest, ice, compression, elevation) -- after your workout, wrap your knees with ace bandages and ice and elevate for at least 20 minutes

-try anti-inflamitory drugs like motrin

-get fitted for the proper kind of shoes, not just any shoe. You need to know if you over or under-pronate. Go to a running specialty store to find out more.

-keep an eye on your form.  Do you hit the ground heel-first? All the shock may go into your knees. Check out Chi Running form techniques for tips

If you do all these things, your knees should feel much better!  Good luck.

there are 3 different types of feet....go to a good running show store, and have your feet assessed, then invest in the proper running show for your type of foot. I started couch to 5K about 6 weeks ago, and the right shoe was key to my success (after the first few tries with the wrong shoes, the right shoes feel like slippers!!!0....good luck

My husband has had knee surgery a few years ago, and has to run on something other than pavement... trails.. and indoor track....  Good luck, I can imagine how discouraging it is when you finally get up the nerve, and have a set back....  You'll get there!