xsane
 

when i go to xsane.org and wanted to download newest xsane binary and notice that there is backends. what are they?
do i need it to get my plustek opticpro 1248u scanner to work under my redhat 9?

i'm currently downloading xsane-0.91-1redhat9.i386.rpm
what else do i need to make my plustek optical pro 1248u scanner to work(usb scanner)?

my default xsane from RH9 says theres no scanner available although KDE control center under hardware information/USB device shows the correct model of scanner.
why do sane still dont detect it?

i found this page and what is this all about?
what should i download?
http://www.meier-geinitz.de/sane/gt68xx-backend