Rather than reformatting my Linux partition and installing SUSE 9.1 from scratch, I figured I'd try the built-in upgrade functionality. Worked (almost) perfectly! It happily let me know which packages weren't maintained anymore and gave me the option of removing them. It also migrated most of my system configuration files properly. I did have to wipe my GNOME and KDE configuration directories in my home directory, but that's okay. SUSE 9.1, overall, feels a lot faster and sleeker. Woot for a distro that doesn't suck! Now I can get back to real work. :P