5K training
http://www.coolrunning.com/engine/2/2_3/181.shtml
Here is a link to the couch to 5K program at coolrunning.com. It is a good start.
I pretty much started walking and when that got boring, I sprinkled in some jogging. I added to the jogging until, over time, I can run for hours now. The link will be a good place to start.
Scott