PaddyBloggit - To quote a well-known tennis player, you can naht be serious!
Whilst you certainly can scan photographic negatives into the computer, all you get are images of these negatives, albeit as JPEGs (or any other image format you care to choose). If you can come up with software to convert these images (which now are merely images of negatives and not actual photographic negatives) into JPEG images showing the photograph as intended when the camera shutter went 'click', you certainly have the means of becoming quite wealthy. Now, unless you can do this, what's the point of attempting it in the first place? If you can tell me, I certainly am listening.
To make these 'negatives' function as normal photographic negatives (now converted to a digital graphic image), you would need to also transfer the technology inherent in these negatives into the computer along with the negative image. This is what a scanner cannot do - yet.
It could be possible to select a negative, from one's shoe-box, which might be able to produce a vaguely acceptable image as a JPEG on the computer, this process is more than likely to be 'hit and miss'. If the negative is in colour, the colours will not be transferred as intended for the photograph, and, if it's in B&W, the light areas will be dark, while the dark areas will be light.
If you really need to have these negatives converted to photographs, the only way is to have them printed in the 'old fashioned' and then scan the photographs into the computer. And then buy a digital camera!