The Tournament Team Eligibility Affidavits to fill in for the 2013 International Tournament are online at http://www.littleleague.org/Assets/forms_pubs/tournaments/Affidavit_Baseball13.pdf for baseball and http://www.littleleague.org/Assets/forms_pubs/tournaments/Affidavit_Softball13.pdf for softball.
Both forms can be filled in using Adobe Acrobat 9 or newer, then printed for signatures.
There are additional forms and procedures to follow for 2013, which can be found at http://www.littleleague.org/tournamentresources.htm.