Someone with more knowledge than I will be by, but in the mean time I recommend this article on scapular dysfunction.
http://www.t-nation.com/article/perf...and_shrugs&cr=
Okay, 2 articles.
http://www.chiroweb.com/mpacms/dc/article.php?id=52014
Seems like I'm on a roll
http://www.martialartsandsportscienc...ter%20PDF_.pdf this is a pdf of a decent article on balancing your workouts for scapulohumeral rhythm and rotator health. There is a lower body version of this work but I'll let you google it.