CS2 stitching is not so powerful. I heard that CS4 stitching is better.
If you seriously into pano, use PTGUI. I highly recommended
.. thankz bbbuttie.. notch suutinkz tu muche pano... more to discover the barrel and pin cushion distortion of the zoom lens... stitching manually allows one to see more of it... crop sensor still got the advantage when comes to pano