Well I thought that the image quality will be better if everything is on max. I've read the tutorial, and I followed it, did the same settings but I still can't get the image with the bench and the tree to be picture perfect, and the plane in the sky still renders for ages.

My PC specs are Intel Core Duo 1.8Ghz, 2GB DDR2 Ram, 256 mb Radeon with ~800mgb turbocache