At the October '96 Usenix LISA I did a presentation called Using Visualization in System and Network Administration. The final paper as it appears in the proceedings is available in gzipped PostScript format. The tools discussed in my paper can be obtained by following this link (go directly to the Tcl/Tk section) or by going directly to my FTP directory.
The Gzipped slides from the LISA conference are available here. They are about 122K compressed, and probably about 2MB uncompressed. You may have trouble viewing them with pageview. ghostview does a good job.. It may show page 13 as blank. If it does, click on some other page like page 1, and then click back on 13 again and it will show up. What can I say, trying to integrate PS generated from Powerpoint and PS integrated from raster->PS conversion hasn't been fun.
Also available: User Centric Account Management with Heterogeneous Password Changing, (PS format) presented at LISA2000 in New Orleans.