I have a windows 7 64 bit os

I need a driver for a Packard Bell 1200 plus flatbed scanner

The only driver I found on Packard Bell's website (http://support.packardbell.com/uk/item/index.php?i=6929290000) is for XP. You're probably out of luck, but contact Packard-Bell to confirm. Budget scanners usually don't get driver updates for new operating systems if they are more than a year or so old.