Thanks Weaselboy,
You are right. I found the preferences over to the right. I don't know why I missed them - I was looking in the drop down menus.
I set to 300 dpi and pdf and closed the program and when I reopened it, it remembered my preferences, so that will work well for me.
I will have to figure out the lasso-ing though because although I managed to scan the whole document, I also got two more images created by the two other smaller selections.
Thanks again for your reply. I always notice your answers are very helpful.
I think I will use this app.
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Figured it out : "Auto Selection : Detect Enclosing Box"
Thanks Again