If you are running ACAD 2000 or above, you can use the "PublishToWeb JPG.pc3" in your plotter configuration settings. This will output a JPG file for your use, as it is a raster format. If you have the raster output already, why do you want to scan it as well? You can also use Adobe PDF writer if you have that program, it does a nice job generating PDF files from acad drawings. Good Luck.