I don't know how old it is, but i would take the camera back to the store to try it on one of their computers. Just to rule out your computer settings. The store should have no problems; thinking if it doesn't work the salesman may get an easy sale out of you. Camera does need to be turned 'on' and in the correct mode for the computer to see it. If the computer never recognized the camera, you can download the camera's driver off the internet first.

Good luck