The all in one solution software you used in XP doesn't work fully with Vista.
But you can still scan and copy by using Windows Photo Gallery.
1. Click on files tab at the top in Window Photo Gallery.
2. Click on import from camera or scanner.
3. Highlight your scanner icon (ie Lexmark X2500) then click import.
4. New scan window will popup, now you can preview or scan using this basic looking Vista utility.
Hope that helps.