The only way to take a scanned file and make it into a form is by using an overlay application. PDF's, allow you to work with the files as images and manipulate the data into something useful. I understand what you are wanting. You want to make the image into an input form. This is why I was suggesting pdf, since it's pretty easy. I don't know about the other apps that have been stated here, but acrobat is the one I use for this.
If you want to do this in excel, you have to recreate it. there isn't a way that I know of without overlaying multiple layers of data in word to make it work like what I think you want. Take a look at the programs mentioned, not Dragon, as it's not what you want, but the pdf apps should be close.
If you need more help, just explain what's not working or what you don't understand. Or if we're wrong, please explain it again...