Is there a way to make a worn laminate floor shine again?
According to their web site at http://na.pergo.com/HowTo_FAQ.aspx they state:


  Pergo floors must never be waxed, polished, sanded or refinished and never use a wet or jet mop when cleaning.


Given that Pergo's surface is just a printed substrate, odds are the printing, itself, has faded. Probably time to replace.

An easy 'fix' might be to get some runners (narrow rugs) to cover the heavily trafficked areas. 

That said, given that it's a printed surface, one option--if you don't want to pull it out and replace completely--might be to repaint it. Talk to a paint professional to see if there are any primers that would work on the Pergo. You could then roll on a new painted finish.