Registration in 2006 International Conference on Computational Science is compulsory for at least one of the authors of the accepted papers. The registration will open in March 2006. You should check at:
http://www.iccs-meeting.org/iccs2006/index.html
Note also that the registration for the workshop is actually the registration for the whole ICCS'2006 conference. Therefore, you will have free access to all the workshops and activities related to this general conference. In addition, the whole set of proceedings will be included in the conference fees.
Finally, note that the workshop chairs are only responsible
for all the academic aspects of the papers (including the submission,
reviewing and final selection, among others). For questions about
registration, lodging, visa, flights, or any other question, please
contact ICCS'2006 organizers.