|That scanner model was launched long before Windows 7 was released so there isn't a Windows 7 driver for it.|
However, see this thread on THF:
If that doesn't work you will have to buy a new scanner or use the scanner only on Windows XP.
Or you can try VueScan software:
If your scanner works with VueScan you will have to purchase a licence if you want to continue using it.
message edited by phil22