I saw something mentioned about scanning on some other thread and I thought I'd offer a little advice for making sure your scans turn out well. All of this advice assumes that you have a graphics program of some sort...Photopaint, Photoshop, something like that.
You should scan both grayscale and color images at a dpi of at least 300 (you can resize later). This helps to ensure that you pick up as much of the color and/or detail on the scan as possible.
Scans of color and grayscale images will come out with a "dot" (a dotted pattern that results from scanning process-printed material). To get rid of this, find the tool on whatever program you're using that will "despeckle" the image (this is usually in the same place as the "blur" option). It will get rid of that annoying dot pattern and make your scan clearer.
Use the brightness/contrast option to lighten or darken scans of old pictures that might have lost some quality due to age. This is usually pretty easy to find on any graphics program and is usually a sliding scale with a preview so you can experiment to get just the right enhancement.