Here's my dilemma, I need to scan in images with the following attributes:
Format of : bitmap
Color :256 color
size : 640 x 480

Is there a softwaer package or a freeware program that I can set the defualts so that when I scan the image in they will come in like this?
If not, then one that alow me to change it and then save it?

You can do that in paint, but it will crop. Your scanner should come with software where you can choose that information before it scans in your image. If you go to your scanner company's website, and look up your specific scanner there, they might have the software there too.