All technical papers, including keynote, invited, and contributed presentations, will be presented within one of the Congress's minisymposia. One-page abstracts in raw text format are required for all papers. Abstracts must be submitted to one of the accepted minisymposia organizers for review. All abstracts must be submitted electronically using the abstract submission system that will be available on the Congress web site, beginning February 1, 2007. The deadline for abstract submission is May 1, 2007 (extended to May 15, 2007). Authors submitting abstracts of contributed papers will be notified of a decision on acceptance no later that on May 15, 2007 (extended to May 22, 2007).