When I go into the Options of the Camera on my 8320, there is an option to choose what picture size I want my pictures to be. Does this effect the quality of the pictures at all? Or is it just the size. I took a picture of a car last weekend as a 'Large' picture. It was 662KB. Today, I took a picture of another car, but this time as a 'Small' picture. This one was 112KB. The car that was 662KB looks like better quality than the car that was 112KB. Is this how it should be? And when I browse through my pictures and click each one, Small (640x480) pictures seem to look like the same size as Large (1600x1200) pictures.

I have received pictures that are 20-40KB, but when I take a picture, it can be anywhere from 600+KB. Is this because of the Picture Size?

EDIT: I actually have another question as well. Do I need Internet access to use AIM on my BlackBerry? I have unlimited text messaging already, so isn't that enough to use AIM whenever? Cause it was enough on my old RAZR.