Sunday 20

ALCOHOLICS ANONYMOUS, 2-3 p.m., Conference Room 2/3, Potomac Hospital, 2300 Opitz Blvd., Woodbridge. 703-445-0777.

Tuesday 22

LIBRARY STORY TIME, sponsored by the Prince William Public Library System. For children 2-3, 10:30 and 11 a.m., Bull Run Regional Library, 8051 Ashton Ave., Manassas, 703-792-4500. For preschool groups of 5 or more, 10:30 a.m., Potomac Community Library, 2201 Opitz Blvd., Woodbridge, 703-494-8126. For children 3-7, 10:30 a.m., Chinn Park Regional Library, 13065 Chinn Park Dr., Woodbridge. 703-792-4800. Free; registration required.

PARENTING CLASSES, for parents of teens; sponsored by the Prince William Cooperative Extension Service. 7-9 p.m. Tuesdays through May 27. Sudley North Government Building, 7987 Ashton Ave., Manassas. $35; registration required. 703-792-6288.

BULL RUN TROUBADOURS, 7:30 p.m., Trinity Episcopal Church, Battle and Church streets, Manassas. 703-753-2249.

PAGER ASSOCIATION, support group for parents of children with gastroesophageal reflux. 7 p.m., Conference Room 1, Wellness Center, Prince William Hospital, 8700 Sudley Rd., Manassas. 703-257-7691.

GENEALOGY RESOURCES WORKSHOP, a local genealogist will discuss strategies for locating people in the 1930 Federal Population Census. Sponsored by the Prince William Public Library System. 7:30 p.m., Bull Run Regional Library, 8051 Ashton Ave., Manassas. Free; registration required. 703-792-4500.

HOME-BUYING SEMINAR, 7-8:30 p.m., Chinn Park Regional Library, 13065 Chinn Park Dr., Woodbridge. Free; registration required. 703-792-6287.

BOOK DISCUSSION GROUP, any Stephanie Plum mystery by author Janet Evanovich. 7 p.m., Chinn Park Regional Library, 13065 Chinn Park Dr., Woodbridge. Free; registration required. 703-792-4800.

Wednesday 23

PARENTING CLASSES, conducted in Spanish, sponsored by the Prince William Cooperative Extension Service. 7-9 p.m. Wednesdays through May 28. Sudley North Government Building, 7987 Ashton Ave., Manassas. $35; registration required. 703-792-6288.

LIBRARY STORY TIME, sponsored by the Prince William Public Library System. For children 2-3, 10:30 a.m., Potomac Community Library, 2201 Opitz Blvd., Woodbridge, 703-494-8126. For children 3-6, 4 p.m., Bull Run Regional Library, 8051 Ashton Ave., Manassas, 703-792-4500. For children 3-8, 4 p.m., Chinn Park Regional Library, 13065 Chinn Park Dr., Woodbridge, 703-792-4800. Free; registration required.

WRITERS GROUP, 7:30 p.m., Borders Books & Music, 2904 Prince William Pkwy., Woodbridge. 703-897-8100.

TOASTMASTERS INTERNATIONAL, Lake Ridge Club No. 8913. 7:30 p.m., Tall Oaks Community Center, 12399 Hedges Run Dr., Lake Ridge. 703-494-5530.

PARENTING CLASSES, to help couples living apart work out parenting decisions; sponsored by the Prince William Cooperative Extension Service. 7-9 p.m. today and April 30, Sudley North Government Building, 7987 Ashton Ave., Manassas. $35; registration required. 703-792-6288.

MICROSOFT WORD BASICS, a hands-on session. 9-10:30 a.m., Potomac Community Library, 2201 Opitz Blvd., Woodbridge. Free; registration required. 703-494-8126.

ALZHEIMER'S SUPPORT, sponsored by the Prince William Senior Center. 7 p.m., 13850 Church Hill Dr., Woodbridge. 703-497-0741.

ADMINISTRATIVE PROFESSIONALS DAY TEA, sponsored by the Continuing Education Office at the Manassas Campus, Northern Virginia Community College. 2:30-4 p.m., Victorian Tea Room, 9413 Battle St., Manassas. $20; reservations required. 703-257-6589.

PARK AUTHORITY BOARD MEETING, 7 p.m., Prince William County Park Authority headquarters, 14420 Bristow Rd., Manassas. 703-792-4296.

PRINCE WILLIAM CHESS CLUB, 7-9 p.m., Potomac Community Library, 2201 Opitz Blvd., Woodbridge. 703-670-5887.

Thursday 24

FARMERS MARKET, 7 a.m.-1 p.m., Church Street, next to the fire station in Old Town Manassas. 703-361-6599.

ESTATE-PLANING WORKSHOP, 7 p.m., Central Community Library, 8601 Mathis Ave., Manassas. Free; registration required. 703-361-8211.

CANCER SUPPORT, for patients and family members, sponsored by Potomac Hospital. 7 p.m., Potomac Hospital, 2300 Opitz Blvd., Woodbridge. 703-221-2500.

LIBRARY STORY TIME, sponsored by the Prince William Public Library System. For children 4-6, 10:30 a.m., Bull Run Regional Library, 8051 Ashton Ave., Manassas, 703-792-4500. For children of all ages, 10:30 a.m., Potomac Community Library, 2201 Opitz Blvd., Woodbridge, 703-494-8126. For children 6-12, 3 p.m., Potomac Community Library, 2201 Opitz Blvd., Woodbridge, 703-494-8126. Free; registration required.

TAX LAW CLINIC, tax laws for 2003 explained by a financial adviser. 7 p.m., Potomac Community Library, 2201 Opitz Blvd., Woodbridge. Free. 703-494-8126.

Friday 25

BACK DOOR FRIENDS, noon, River Woods Community Center, 16573 Nanticoke Rd., Woodbridge. 703-221-5513.

Saturday 26

FARMERS MARKET, 7 a.m.-2:30 p.m., Church Street, next to the fire station in Old Town Manassas. 703-361-6599.

RECOVERY INC., for people experiencing anxiety, depression, fear and other emotional problems. 10 a.m.-noon, Cokesbury United Methodist Church, 14804 Blackburn Rd., Woodbridge. 703-490-5423.

BOOK DISCUSSION, author Charles V. Mauro discusses his new book, "The Battle of Chantilly (Ox Hill), A Monumental Storm." 2 p.m., Bull Run Regional Library, 8051 Ashton Ave., Manassas. Free; registration required. 703-792-4500.

E-MAIL BASICS CLASS, 9 a.m., Potomac Community Library, 2201 Opitz Blvd., Woodbridge. Free; registration required. 703-494-8126.

Items are accepted on a space-available basis from public and nonprofit organizations only, and must be received at least 14 days before the Sunday publication date. Submit information to: This Week, The Washington Post, 9420 Battle St., Manassas, Va. 20110. Include event name, dates and times, exact address, cost and a publishable contact phone number. For more information, call 703-392-1303.