Just chiming in with everyone else... You Can Do It!

2+ on Chi or Evolution Running. The styles are pretty close. They both emphasize forefoot running over heel pounding. Over time this will really save your knees and hips.

Check out www.kickrunners.com. Here's the link to their Couch-to-5k program: http://www.kickrunners.com/forum/showthread.php?t=10724. The beginner program (link at the bottom of the page) builds from 1 minute jog/ 1 minute walk to running a 5k over 8 weeks, starting with only 20 minutes the first day. It also only has you running 3x per week. It seems very doable.

Good Luck! And most importantly Have Fun!