After entering the name of the person you are looking for and selecting the correct match on a couple of follow up screens, you will see a summary of the death and an image icon.
By clicking on the image Icon the Death certificate will be opened and can be saved by clicking on your right mouse button and select "Save picture as"
Many images need to be straightened and cropped. I use Picasa which is a free photo editing program from Google. It is easy and quick. Have fun finding your ancestors certificates.