This post is from one non-runner to another. LOL. I tell everyone "I'm not a runner," but through reading this forum and hearing everyone rave about how running slims out thighs I added running into my w/o rotation about a month and a half ago. So while I still consider myself not much of a runner, I'm getting better ... (and got the slimmer thighs to prove it!) haha.
For me, I didn't follow any kind of program like u describe with the couch to 5K. I just got outside and ran. The very first day I only ran about 5 blocks and then I had to walk. Then when I got up enough energy I would run again. Repeated that for about a half an hour. Then a few days later, I did it all over again. I've been running 2-3 times a week now for, like I said, about a month and a half ... and now I'm up to running a 5K. I'm not fast, mind you, still pretty slow, but I can finish an entire 5K, run the entire thing, and for a "non-runner" that makes me feel pretty proud of myself. When I'm running I just tell myself that the only way I can stop is if (A) I have a side ache that hurts really bad and won't go away or if (B) I feel like I'm going to barf. haha. Sounds like I'm torturing myself, haha, but when I'm in the right mindset (as cathe would say) it helps me keep my ass in line so I can finish the run. Believe me, some days it seems a lot easier to walk. Anyway, I hope you find this encouraging as you embark on your own running adventure. It is possible to become a runner, I firmly believe this. Oh and one other word of advice: take it slow. Don't do too much too fast and don't start out running 5 days a week. Even now I only run 2-3 times a week in addition to aerobics and weight lifting. I find it's a little easier on my 28-year old knees! (not sure if I helped ... probably rambled on too much) LOL