Shine is incredibly easy to use (that’s why you see it on SOOOOOOO MANY commercials, tv programs and movies). The best place to start is http://www.trapcode.com. There are some tutorials on how to use this plug-in but I can also provide some info on how to use this with After Effects and your footage.
I believe you said you don’t have a lot of movement with the person. Therefore, you will need to draw a couple of masks around the eyes… first of all duplicate your footage so that you can easily isolate the eyes… then draw masks around your eyes so that you can apply the effect to the duplicated layer. Since it is the same footage the eyes will line up and move exactly the same and you can just apply the effect to that layer.
Lastly, you will need to play around with your length of the rays, color and the way they act within your scene. But I would much rather use something like AE or Combustion for effects generating than Vegas.
Good luck and let me know if I can help in any other way. Take care.
Seth