I've just worked out a way to do it..
I save the image as a photo somewhere on your desktop.
then go into the silhouette software and go to open and locate the saved image on your desktop.
you will then have the image come up on your blank screen.
I then open whichever image file it is which will open up on a seperate document... I then go back to the first document with the photo copy it and then paste it into the second document where the cutting file is...
keep it on the side where it doesnt cut and then save it as a file... now you will always know what it looks like
I know it's a bit lengthy but you soon get the hang of it!