I have to admit, I had no clue you could put a stroke on an adjustment layer...learn something new everyday.
Track mattes are pretty basic but important concepts to learn in AE...if you are just getting started check out some of these links from Todd Kopriva(works at Adobe). There some really good training programs there to get you started & give you a proper understanding of how AE works.
Getting started with After Effects (CS4, CS5, CS5.5, & CS6)
Glad you got it to work.
Johnny Cuevas, Editor
Thinkck.com
"I have not failed 700 times. I have succeeded in proving that those 700 ways will not work. When I have eliminated the ways that will not work, I will find the way that will work."
---THOMAS EDISON on inventing the light bulb.