There are two reasons I can think of that YaST didn't configure the scanner:
First, if you forgot the root password, you wouldn't have even gotten the scanner configuration window to pop up. To reset the root password, you'll have to: boot from the installation CD (CD1). Select the "rescue" option from the grub menu. Once booted, you'll get a "rescue login:" prompt. I just enter "root" at this point. Mount your root partition using something like: "mount /dev/hda1 /mnt". Then "cd /mnt/etc". Make copy of the "shadow" file for safekeeping: "cp shadow shadow.saved-on-20051117" (or something similar). Then edit the shadow file (using a text editor like vi) and delete the long character string that's between the first two colons (":") in the entry for "root". When you're done, the beginning of the root entry should look like: "root::". (Don't mess with the remainder of the root entry. If you do by accident, well, you
did make that copy of the file beforehand, didn't you?) Save the file, "umount /mnt", and reboot. You should have a root account without a password once the system's back up. You should
immediately issue "passwd" and define a new root password at this point or your system is wide open. (It ought to prompt you for the old password. Remember: you just made it a null string so just press "Enter" at that prompt. :-) ) If this system has a direct connection to the Internet, I'd suggest booting to single user mode first to define the new password. That way, the system isn't running the networking daemons and you're not vulnerable to an attack via the network.
Second, once you get that root password problem solved, you're
still not out of the woods. According to the SANE web site (
www.sane-project.org), it appears that, as of the end of July of this year, the 3450 is not supported. There are some suggestions at "www.sane-project.org/contrib.html". You might try a couple of the commands listed on that page and send your results to the project's developers.
Wish I had some better news on your scanner...
Later,
Rick (former Astra (SCSI) user)