http://www.renderosity.com/mod/forumpro/showthread.php?thread_id=2722867

I believe this thread might be resurrected back as a sticky but it contains a section on reflection links as you scroll down.  Some methods are obsolete, like image maps connected to reflect nodes.  This should get you started.  Also, search the RuntimeDNA forum for reflection topics, especially those involving Bagginsbill's inputs and tutes.