If you are looking for a good venue for publishing your work about or using ns-2 or ns-3, I'd like to recommend SIMUTools. We will also co-locate a Workshop on ns-3 at this conference (more on WNS3 later). But, please do not hold your paper for the ns-3 workshop, because we are not planning a regular paper track; instead, please submit full papers to the main track of SIMUTools.
SIMUTools 2010: Torremolinos, Malaga, Spain - March 15-19 2010 SIMUTools 2010 (the 3rd International Conference on Simulation Tools and Techniques) invites the submission of original, high-quality papers on simulation tools, methodologies, applications, and practices. This new edition of the conference builds upon the great success of our two previous meetings. While SIMUTools' main focus is on advances in simulation tools, we encourage the submission of papers on all aspects of simulation modeling and analysis, including broader theoretical and practical research contributions. Paper submission deadline: October 12 (abstract), October 19 (full paper) For more information: http://www.simutools.org/Publicity/CallForPapers