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The real problem jjjnettie with point and shoot is they have small sensors and very small size pixels on the sensor. The more megapixels the smaller the physical pixel size. The upshot of it all is that a point and shoot has as much noise at 100 ISO as a Canon DSLR has at 1600 ISO. By all means get a P/S for happy snaps but it will be close to useless for anything but the bright astro objects.
In fact anything more than about two to four megapixels is a waste of time and money in a point and shoot as the noise gets to quite noticeable (intolerable) levels when shooting on lower light levels.
I guarantee that a older Canon Ixus with two megapixels (or similar) would leave the current 6 to 10 MP P/S cameras for dead as far as signal to noise is concerned. It is all marketing hype.
The situation is a bit better if the sensor in the P/S is larger.
Bert
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