You need to install sane and xsane. Copy the file u222v067.bin from the install cdrom to /usr/local/bin (see http://snapscan.sourceforge.net/
) then go to /etc/sane.d and open snapscan.conf and on the line firmware edit it to read;
You need to make sure that the system is picking up usb devices. If you do xsane from the command line it should all work.