Huge black spot on screen.

This just appeared out of nowhere on my nano. I am pretty upset about this because I can't even see the songs that im listening to, let alone see the photos. Anyone know where I can get this fixed, and if this is something Apple will actually fix, etc? If so, where can I send it in to get it fixed, or whatever needs to be done. Has this happened to anyone else? Thank you so much for any response.

Windows XP