i got an installation of sarge and i got a scanner that i want to setup. the scanner is "Mustek 1200 UB plus". i plugged the scanner in the usb and i did a lsusb:
aris@LanParty:~$ lsusb
Bus 003 Device 001: ID 0000:0000
Bus 002 Device 002: ID 046d:08b0 Logitech, Inc. QuickCam 3000 Pro [pwc]
Bus 002 Device 001: ID 0000:0000
Bus 001 Device 002: ID 05d8:4002 Ultima Electronics Corp. Artec Ultima 2000 (GT6801 based)/Lifetec LT9385 Scanner
Bus 001 Device 001: ID 0000:0000
aris@LanParty:~$

then i installed xsane. when i tried though to start the xsane it could not find any devices!
then i did a scanimage:
aris@LanParty:~$ scanimage -L
device `v4l:/dev/video0' is a Noname Logitech QuickCam Pro 3000 virtual device
aris@LanParty:~$
this is as user, it could not find the scanner, it could see only the webcam. when i did scanimage as root:
LanParty:~# scanimage -L
device `v4l:/dev/video0' is a Noname Logitech QuickCam Pro 3000 virtual device
device `gt68xx:libusb:001:002' is a Mustek BearPaw 1200 CU flatbed scanner
LanParty:~#

does anyone got any idea on how to fix the problem and make the scanner work?

Add your user name to the group for the scanner.

and how do i check to see the scanner group that the user belongs to?

scanner is a group and the user needs to made part of the group in order to use the scanner. To see if the user is part of that group look at the contents of /etc/group and look for the line scanner.

here is the lines that have to do with the scanner:
scanner:x:108:
saned:x:109:

now what do i do?

As root open the file in an editor and enter your user name following the colon on each of these lines. If you have multiple users then separate the user names with commas.

thanks a lot for your answer. so it will be like that?
scanner:x:108:username
saned:x:109:username

Yes. If you use a kde desktop then this can be done through K -> System ->KUser.

even though i did this, still the problem exists. any ideas?

Do you work purely in consol mode or do you use a gui and if so which one? What happens when you issue the command xsane?

no i am working by using gui. i am using to configure the system and make it independent to window managers. anyway, when i issue xsane it is looking for devices and it cannot find the scanner. although the lsusb does see the scanner. there is something that i am missing and it makes me angry. any ideas?

Which gui are you using? KDE, Gnome, etc.? Still sounds like a user problem. If do xsane as root what happens?

i am using kde. kdm does not allow root to login directly. so if i login as the user and open a console as root and type xsane it will not run.
what can i do?

On the kde desktop go to K -> System -> KUser. Supply the root password and you can set groups to users using the check boxes.

i went to the the kuser but the group scaner already exists. here is the printscreen of the program:
http://dreamer.binary.googlepages.com/3.png
still the scanner does not work. any ideas?