New Running Plan?

Blegh. So today I decided to skip ahead on the Couch to 5K program, because I felt like if I followed it exactly that it would take forever to get to a 5K and I don't have forever. SO, I skipped to Week 4, and did it for my run today. Blegh.

I felt great until the second run. See, this day calls for the following sequence:
5 minute warmup
3 minute run
90 sec walk
5 minute run
2.5 min walk
3 minute run
90 sec walk
5 minute run
5 minute cooldown

I made it through about three minutes of the second run and my shins started burning. So I walked that segment and the 2.5 min walk. I tried to run again and only made it a minute or so. I walked the rest!

I'm going to get new shoes! Like, tomorrow, maybe!

Any other advice on burning shins and how to prevent them???