Megiddo, our readme file is vague regarding where the configs are. Not that adding it would help many, but pointing to it does make it difficult for us when it's not actually there.
ngc, after installing svn of ulx, see your addons/ulx/data/ulx folder for examples.
DO NOT EDIT THOSE FILES. Copy them to gmod/data/ulx first. (The files actually mention that too)