The scanner linked above has a 5 megapixel resolution, which is not very much at all. Great to look at the image on a computer screen but not much use for much else. It is worth thinking about what you want to do with your scans/hegatives and go for the highest resolution you can afford.

There are loads of websites like this one that give an overview of available scanners. If you have a lot of slides/negatives it's a big job to do and you may as well do it well.