Susan... http://www.simpleocr.com/

This is the usual freeware 'standard' offered. I 'may' have another which is better, but I haven't looked at it in ages. Let me poke about in the catacombs and see what the situation is. (I know there is a paid mode, but they gave one version away free awhile back)

Now, here is another which is listed and claims to be as accurate as any. I can't comment on it.

http://code.google.com/p/tesseract-ocr/