You could also try following a training program like this one I found:
http://www.coolrunning.com/engine/2/2_3/181.shtml
It seems okay for beginners and is called the "Couch to 5k running program" and should have you running 3 miles in 2 months or so.
Actually, the best thing to do is consult a sports therapist. That way you avoid any sport injuries... Anyway, good luck with recovering!
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