Registration in 2009 International Conference on Computational Science and its Applications, ICCSA'2009 is compulsory for at least one of the authors of the accepted papers. The registration is not available yet but it will be opened soon. You should check at the main web page of ICCSA'2009, press the link "Registration" and follow the instructions indicated there.
Note also that the registration for the workshop is actually the registration for the whole ICCSA'2009 conference. Therefore, you will have free access to all the workshops and activities related to this general conference.
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
ICCSA'2009 organizers.