Running

Let me start by saying that I am not a runner. I hope to be one day, but for now I'm just running < 1 mile after work.

After a few days of this, my knees (the tendon thing that goes down from the knee to the shin) are pretty sore. I'm wondering if I should power through this or do something differently?

A friend suggested these as he's had good luck with them, but I'm not sure if this is something the community condones or endorses.

Update: Thank you all for the suggestions! The consensus seems to be to take it easy as I begin, and run every other day (and continue to walk every day).