Hello there: I also started running just a short 3 years ago, before that, I never, ever ran in my life. I have a backgrownd in swimming so running was totally a learning experience still in the making. Do keep running, it is the only way to get stronger. Also, try to do some weight lifting with your legs, that helps a lot. I have done Triathlons for the past 3 years and now I am so hooked on this sport. I started doing only Sprints, then, in 04, I added an Olimpic Distance, then, this year I added a Half Iron Man, (1.2 mile swim, 56 mile bike, 13.2 mile run) I finished in 6:23:22 and grabbed a 3rd. place in my 50-54 age group. I am 54. Next year I will do the Wisconsin Iron Man, on September 10th. I can't wait. So keep on training, never give up and you will soon see the results of your hard work. Best wishes.
Maria
PS. there is a web site for triathletes: www.trinewbies.com
Check it out. Here you can find really good training programs, from Sprint Triathlons to Half Iron Man. You have to become a member, it is free. All you have to do is fill out the registration form for your profile. Good luck.