The settings in /etc/ found be different in SUSE. However, it's a good idea to copy this entire folder, it's very easy to restore files like /etc/X11/XF86Config(-4), and perhaps your webserver config. (etc..) Restoring the entire folder isn't such a good idea, there are many differences between distribution.
It's also a good idea to copy the hidden files in your home directory, or just copy the entire folder to the new system (much easier, and works better) These files contain your personal settings, like kde settings. You don't need to configure your desktop environment again
I'd recommand using this command for copy: "cp -gdpR /home/yourname destination-here
Creating an archive: "tar zcvf archive.tar.gz /some/folder"
Restoring an archive: use 'cd' to change to the correct directory, use "tar zxvf /path/to/archive.tar.gz" to restore it.