Scanner Epson DX4450 does not scan

Hi people,
my all-in-one Epson scanner does not work. I tried to install the iscan drivers (free and/or proprietary) via repository and/or via Avasys website, but nothing happens: the scanner is not recognized.
I use Gnome and openSUSE 11.2
Any hint?
Thanks in advance.

if you issue the following command

sane-find-scanner

and then the command

scanimage -L

tell us what you get

copy and paste the results back here: the EDIT menu on the top line of the terminal is helpful; well done to track down the Epson drivers from their website

Hi!
Here’s the output:

 sane-find-scanner 

  # sane-find-scanner will now attempt to detect your scanner. If the
  # result is different from what you expected, first make sure your
  # scanner is powered up and properly connected to your computer.

  # No SCSI scanners found. If you expected something different, make sure that
  # you have loaded a kernel SCSI driver for your SCSI adapter.

libusb couldn't open USB device /dev/bus/usb/001/001: Permission denied.
libusb requires write access to USB device nodes.
libusb couldn't open USB device /dev/bus/usb/001/001: Permission denied.
libusb requires write access to USB device nodes.
libusb couldn't open USB device /dev/bus/usb/001/002: Permission denied.
libusb requires write access to USB device nodes.
libusb couldn't open USB device /dev/bus/usb/001/002: Permission denied.
libusb requires write access to USB device nodes.
found USB scanner (vendor=0x0ace, product=0x1215) at libusb:001:002
found USB scanner (vendor=0x04b8 [Language Error], product=0x083f [Language Error]) at libusb:001:004
  # Your USB scanner was (probably) detected. It may or may not be supported by
  # SANE. Try scanimage -L and read the backend's manpage.

  # Not checking for parallel port scanners.

  # Most Scanners connected to the parallel port or other proprietary ports
  # can't be detected by this program.

  # You may want to run this program as root to find all devices. Once you
  # found the scanner devices, be sure to adjust access permissions as
  # necessary.

antonello@linux-t2wj:~> scanimage -L 

No scanners were identified. If you were expecting something different,
check that the scanner is plugged in, turned on and detected by the
sane-find-scanner tool (if appropriate). Please read the documentation
which came with this software (README, FAQ, manpages).

Solved!
I followed this thread:

Problem with iscan under openSUSE 11.2 solved - openSUSE Forums

Thanks to everybody, greetings!

EDIT: how can i add [Solved] to the title of the thread?