Laser won't read disc

Question

When I was removing the Wii from the box the way it was packaged it fall on the ground.  Not far but hit the floor.  The problem now is it makes a funny sound when I pt the disc in and won't read.  I'm from canada, in Manitoba.  The bigger problem is I can't retgurn it because I got it from my roommate for a really good deal, he gave me alot of stuff with it.  Anyways any ideas on what to do or where to take it?