Regarding CJK (Chinese/Japanese/Korean) TrueType Fonts:
I created two packages for Slackware 12.0 that install the "Han Nom" high-quality Unicode font (free for non-commercial use, which also supports Vietnamese script), and the Arphic Mingti Unicode font (derived from the Arphic font), also a high-quality font and totally free.
For the font package to install on Slackware 11.0 or earlier, simply rebuild the package on your system using the SlackBuild script plus sources - the script will figure out the correct TTF path for your version of X (Slackware 12.0 uses /usr/share/fonts/TTF but previous versions of Slackware use /usr/X11R6/lib/X11/fonts/TTF).
Please tell me how you like these fonts, or if you use a different, better (and also free!) font.