Hello,
There are so many settings on the N80 for the camera it is easy to fook the picture up by not having it quite right.
I advise that you keep the macro setting off and keep it on landscape unless you are doing close up shots (thats the little switch uner the camera lense if you're not sure. The flower is macro).
Keep it set on 3mp. You can play about with colour balances and other stuff but I wouldn't bother. When you take a picture, make sure you keep really still and stay still for a few seconds after you have pressed the button.
You can also set the cammera up in shooting mode for different circumstances.
You can get some good pictures out of the N80 under the right circumstances.