USA Wrestling has announced to its membership the exact rules and bracketing systems that will be used at each of its 2005 national and regional events.    In 2004, FILA, the international wrestling federation, changed the rules of international wrestling dramatically. Among the key rule changes in the new rules which are used in both freestyle and Greco-Roman wrestling were:  * A match will consist of three, two-minute periods. A wrestler must win two periods to win the match. The total score of all three periods does not matter. Each period starts with a 0-0 score.  *  If a wrestler wins the first two periods, the match is over at the conclusion of the second period.  * If a wrestler scores six more points than his/her opponent in a period, that is considered a technical superiority for that period, and the period ends when the six point lead occurs.  * Any period that ends with a 0-0 score goes to the clinch.   * If a wrestler scores a five-point throw, he/she automatically wins that period.  * If a wrestler scores two three-point holds in one period, he/she automatically wins that period.    In the summer of 2004, USA Wrestling's state leaders voted NOT to change to the new FILA wrestling rules for the 2005 age-group season. This means that matches will still be two periods in length, and the total score of the match will determine the winner, just as in past years    However, for age-group events which are qualifiers for an international competition, USA Wrestling will use the new FILA rules. This is to allow athletes to qualify for U.S. teams within the rules that they will use at the international events.    This has led to some confusion among USA Wrestling athletes, coaches, officials and volunteers. In order to clarify this situation, USA Wrestling has posted a list of rules and bracketing that will be in place at each event.    If you have any questions, contact the USA Wrestling Events Department at 719-598-8181.    All Junior Regionals   March 24-26 - Rocky Mountain Regionals at Laramie, Wyo.   March 25-27 - Northwest Regionals.at Battle Ground, Wash.   April 9-10 - Central Junior Regionals at Jeffersonville, Ind.   April 15-16 - Southern Plains Regionals at Marshall, Mo.   April 22-24 - Northeast Regionals at Brockport, N.Y.   April 27-29 - Western Regionals at Las Vegas, Nev.   May 12-14 - Northern Plains Regionals at Waterloo, Iowa  RULES: Old rules  BRACKETING: Vertical pairing (two pool) system    All Senior Regionals   March 24-26 - Rocky Mountain Regionals at Laramie, Wyo.   April 22-24 - Northeast Regionals at Brockport, N.Y.   May 12-14 - Northern Plains Regionals at Waterloo, Iowa  RULES: New FILA rules  BRACKETING: Double elimination line bracketing  QUALIFIER FOR: Rocky Moutain and Northern Plains qualify for  Senior World Team Trials    Kids/Cadet Regionals   May 27-29 - Central Kids/Cadet Regionals at Battle Creek, Mich.   May 27-30 - Southeast Kids/Cadet Regionals at Greenville, S.C.   June 3-5 - Northeast Regional Championships atBristol, R.I.   June 9-11 - Northern Plains Regionals atRochester, Minn   June 9-11 - Southern Plains Regionals atCarlsbad, N.M.   June 20-25 - West Regionals atWinnemucca, Nev.  RULES: Old rules  BRACKETING: Vertical pairing (two pool) system    April 1-3 - Kids/Cadet Folkstyle National Championships at Cedar Falls, Iowa  RULES: Folkstyle  BRACKETING: Double elimination line bracketing    April 1-3 - Veterans National Folkstyle Championships at Cedar Falls, Iowa  RULES: Folkstyle  BRACKETING: Double elimination line bracketing    April 8-9 - Veterans National FS/GR Championships at New Orleans, La.   RULES: Old rules  BRACKETING: Vertical pairing (two pool) system    April 8-10 - Body Bar Women's Nationals at San Diego, Calif.     For Body Bar FILA Cadet/FILA Junior/University Nationals   RULES: New FILA rules  BRACKETING: Vertical pairing (two pool) system  QUALIFIER FOR: FILA Junior World Championships, Tour du Mondes (Univ./FILA Cadet)    For Body Bar Girls Nationals Events (Grades 3-6, Grades 7-8)  RULES: Old rules  BRACKETING: Vertical pairing (two pool) system    April 8-10 - Middle School Folkstyle National Duals at Danville, Ill.   RULES:  Folkstyle  BRACKETING: Team Pool system    April 13-16 - Men's FILA Cadet  National Championships at Evanston, Ill.   RULES: New FILA rules  BRACKETING: Vertical pairing (two pool) system  QUALIFIER FOR: Tour du Monde    April 13-16 - Men's University National Championships at Evanston, Ill.   RULES: New FILA rules  BRACKETING: Double elimination line bracketing  QUALIFIER FOR: University World Team Trials    April 27-30 - Men's FILA Junior National Championships at Las Vegas, Nev.   RULES: New FILA rules  BRACKETING: Double elimination line bracketing  QUALIFIER FOR: FILA Junior World Team Trials    April 28-30 - U.S. Senior National Championships at Las Vegas, Nev.   RULES: New FILA rules  BRACKETING: Follow-the-leader line bracketing (If you lose to a semifinalist, you are placed in the consolation rounds for places 3-8).  QUALIFIER FOR: Senior World Team Trials    May 22-29 - Men's FILA Junior World Team Trials and Camp at Colorado Springs, Colo.  RULES: New FILA rules  BRACKETING: Single elimination line bracketing  QUALIFIER FOR: FILA Junior World Championships    May 22-29 - Men's University World Team Trials and Camp at Colorado Springs, Colo.   RULES: New FILA rules  BRACKETING: Single elimination line bracketing  QUALIFIER FOR: World University Games    June 15-19 - Schoolboy/girl National Duals at Indianapolis, Ind.    RULES: Old rules  BRACKETING: Team Pool system    June 17-19 - U.S. World Team Trials (FS, GR, W) at Ames, Iowa  RULES: New FILA rules  BRACKETING: Double elimination line bracketing  QUALIFIER FOR: Senior World Championships      June 23-27 - Cadet National Duals at Kansas City, Mo.  RULES: Old rules  BRACKETING: Team Pool system    June 28 - July 3- Junior National Duals at Enid, Okla.   RULES: Old rules  BRACKETING: Team Pool system     June 29-July 2 - Kids National Freestyle/Greco-Roman Championships at Green Bay, Wis.   RULES: Old rules  BRACKETING: Vertical pairing (two pool) system    July 23-29 - Cadet National Championships at Fargo, N.D.   RULES: Old rules  BRACKETING: Vertical pairing (two pool) system    July 24-30 - ASICS/Vaughan Junior NationalChampionships at Fargo, N.D.   RULES: Old rules  BRACKETING: Vertical pairing (two pool) system    July 29-30 - Women's Junior National Championships at Fargo, N.D.   RULES: Old rules  BRACKETING: Team Pool system    July 28 - Women's Junior National Dual Championships at Fargo, N.D.   RULES: Old rules  BRACKETING: Team Pool system    Oct. 27-29 - Sunkist Kids International Open at  Tempe, Ariz.   RULES: New FILA rules  BRACKETING: To be announced    Dec. 16-18 - New York AC Christmas Championships at New York, N.Y.    RULES: New FILA rules  BRACKETING: To be announced