I've got autotrace installed and am running delineate now. I'd like to thank Aric Campling of Hosers. To be honest, though, I eventually located a precompiled version of autotrace on SuSE's ftp servers and took the way of least resistance from there.
I've been playing with delineate and inkscape both at home and at the studio. I've got some really interesting effects out of vectorisation, especially when vectorising large, complex images, and I'm learning what the programs can and cannot do. The image on the left is a portrait of Kel from the Cast page. The one on the right is a vectorised version, re-exported to PNG with only minor changes from the SVG file. The SVG file is here. It's only 12 paths, unlike the monstrosities I created at the studio. See if you can read, manipulate and validate it!