C25k on hold

Well, it doesn't look like I'm going to be able to complete this program.  I'm having a problem with the muscle around my knee after I run, and it's so sore I can't kneel on it or bend it completely - from what I'm reading I need to build up my quad muscles more so that it doesn't happen.
For now I'm going back to the elliptical and biking for a lower impact cardio workout.  I really want to complete this program because I feel so strong when I run, but I really don't see it happening.  So I'm taking a time out from it for now and depending on how my knee feels, I may pick it back up in a couple of weeks.