Looking up the scanner
specifications, it looks like it doesn't do slides or negatives.
I digitized hundreds of negatives a couple years ago, and what I did was basically take a picture of each negative with my digital camera. Do you have a digital camera with a decent macro lens? If so, you can tape the negative to a clean window and take a picture of it with your camera on a tripod with the negative lit up from behind by a uniformly hazy gray sky. And then get the outstanding and free open source software "Gimp" to convert it to a positive image and manipulate the brightness and contrast as needed.
But if I were you, I would do none of that. I would take the negative to Waitrose or some appropriate store that has a self serve photo department, and use their negative scanner to get a print. You may even be able to get an electronic copy there instead of scanning the print yourself when you get home. Around here, I'd take it to CVS, which is a drugstore, and get it done for like 50 cents. If you are doing just one print, it's definitely the way to go.