Prospective authors were invited to submit extended summaries electronically using the on-line submission interface. Submissions were accepted only in PDF format, written in English, with no more than four (4) pages, including results, figures and references.

The deadline for submission was June 17, 2007.

The review results are available since August 31, 2007.

The preliminary accepted paper authors should:

• Revise their papers according to the reviewers comments. The revised papers should be 4 pages long including results, figures and references. The submission should be done in PDF format;

• Prepare a reply to the reviewers comments, using the template provided here and send it, together with the revised paper, to as soon as possible, and no later than September 14, 2007.

• If your paper is finally accepted based on your reply to the reviewers and the revised paper, you will be notified by e-mail by the PCS'2007 Committee. Only after checking that the reviewers comments were reflected in the final submitted version, the paper acceptance will be confirmed.

• After your paper has been finally accepted, submit its final electronic version, by September 17, 2007, using the on-line submission interface.

• Fill the copyright form and fax it to the PCS 2007 Secretariat at +351 218418472, or scan and send it by e-mail to , by September 17, 2007;

• Complete your registration by September 21, 2007, so that your paper can be considered for publication.

If your paper is finally accepted, please consult the Conference Program by the end of September to know if you have an oral or poster presentation.