I need advice about training for a 10K.

I have resolved to run a 10K that is coming up in September. I want to train correctly and work my way up to the mileage. Does anyone know of any programs or have any suggestions along those lines? I am not a sedentary person, but I am also not in the best of shape, plus I am 43 years old so I know how important it is to do this right in order to make it happen while avoiding injury. Any advice would be much appreciated.