Here's an article about DOMS.  Enjoy!

Also, here's a useful muscle site to help you with M of D.

http://www.nytimes.com/2006/05/16/health/nutrition/16run.html

muscle animations for the future:

Here's a couple of good muscle animations that will help us soon:

One showing how the nerve communicates with the muscle.

Another site showing how the myosin and actin slide over eachother.  This is pretty detailed, but it nicely shows the process.