SUPPORT GROUP: Parents of Children Who Are Mentally Challenged, First Baptist Church, 124 Pine St., Lockport. 7 p.m.
FALL MEETING AND LUNCHEON: Council on Aging of Niagara County, Inc.'s fall meeting and luncheon, Best Western Inn-on-the-River, 7001 Buffalo Ave., Niagara Falls. 10 a.m. Call 285-8224 for reservations.
FREE CLINIC: Sexually Transmitted Disease Clinic, Human Resources Building, 10th and Falls streets, Niagara Falls. 1:30 to 5 p.m. Continues Thursday.
MEETING: Overeaters Anonymous, DeGraff Memorial Hospital, 445 Tremont St., North Tonawanda. 7 p.m.
DINNER MEETING: Full Gospel Businessmen's Fellowship International, with guest speaker Arcadio Gonzalez of Buffalo, Como Restaurant, 2220 Pine Ave., Niagara Falls. 6:30 p.m.
MEETING: The Chess Club, Earl W. Brydges Public Library, 1425 Main St., Niagara Falls. 7 p.m.
STORY TIME: For preschool children, with stories, finger plays, flannel board and crafts, LaSalle Library, 8728 Buffalo Ave., Niagara Falls. 10:30 a.m.
AL-ANON: When someone else's drinking affects your life, Presbyterian Church, Main and Church streets, Youngstown, and Al-Anon Adult Children, Our Savior Lutheran Church, 2759 Military Road, Town of Niagara. 7:30 p.m.
HOPE: Helping Other People Endure, a grief support to anyone who has experienced a death of a parent, spouse, child, sibling, any other relative or close friend, 723A, Mount St. Mary's Hospital, 5300 Military Road, Lewiston. 7 p.m.
PERFORMANCE: The grand opening ceremony of the 1998 North Atlantic Skating Championships, Niagara University ice complex, Lewiston. 7 to 8 p.m. Call 693-8524 for tickets.
SUPPORT GROUP: For anyone who has experienced breast cancer and their families, 723A, Mount St. Mary's Hospital, Lewiston. 7:30 p.m.
TELECONFERENCE: Preventing Adolescent Suicide, Building G, Niagara County Community College, 3111 Saunders Settlement Road, Sanborn. Fee: $10. 1:30 to 4 p.m.
AL-ANON: When someone else's drinking affects your life, First Presbyterian Church, 506 Cayuga St., Lewiston. 8 p.m.; Ala-Teen: 8 p.m.; and 7 Clan Al-Anon, Tuscarora Health Center, Mount Hope Road, Tuscarora Reservation. 7 p.m.
MEETING: To help care givers to understand and deal with legal issues, Orleans-Niagara Board of Cooperative Educational Services, 3181 Saunders Settlement Road, Sanborn. Fee: $9. 7 to 8:30 p.m. Call 731-4176, extension 452 to register.
SPECIAL PROGRAM: Taking Charge of Your Diabetes, third floor classroom, Mount St. Mary's Hospital, Lewiston. 6:30 to 8:30 p.m. Continues through Thursday. Call 298-2145 to register.
CUSTOMER SERVICE SEMINAR: Turning Customer Service into Profits, sponsored by the Small Business Development Center of Niagara County Community College and the Niagara Falls Area Chamber of Commerce, Radisson Hotel, Third and Old Falls streets, Niagara Falls. Registration: $25. 9 a.m. to 3 p.m. Call 285-9141, extension 210 to register.
SUPPORT GROUP: For caregivers, Abiding Savior Lutheran Church, Ruie Road and Cambridge Avenue, North Tonawanda. 1:30 to 3 p.m.
BUSINESS LEADERS LUNCH: The Niagara Business Alliance, Inc.'s luncheon, with speakers who will discuss whether there is a need for a constitutional convention in New York, Best Western Inn-on-the-River Atrium, Niagara Falls. Cost: $15. Noon to 1:30 p.m. Call 439-4806 for reservations.
BLOOD PRESSURE CHECK: Sponsored by the American Red Cross, Human Resources Building, 10th and East Falls streets, Niagara Falls. Free. 10 a.m. to noon.
WORKSHOP: Adventures in Spirituality, with topics to include Angels, Chanting and Dance, Dreams, Men and Spirituality, Native American Spirituality, Prayer, Spirituality Unbound by Doctrine, Tai Chi, Therapeutic Touch, Levels of Consciousness and Spirituality and the Active Person, the Dale Association's Center for Lifelong Learning, 33 Ontario St., Lockport. Cost: $5. 7 p.m. Call 433-1089 to register.
CERAMICS: For Wheatfield senior citizens, 2800 Church Road, Wheatfield. 9 a.m.
FALL STORY HOUR: For 3- to 5-year-olds, North Tonawanda Public Library, 505 Meadow Drive, North Tonawanda. 6:30 p.m. Continues Thursday and Friday at 10:30 and 11:30 a.m. Call 693-4132 to register your child.
AL-ANON: When someone else's drinking affects your life, St. Stephen's Episcopal Church, 516 Cayuga Drive, Niagara Falls. 7:30 p.m.; Ray of Hope Al-Anon: St. Leo's Catholic Church, 2748 Military Road, Town of Niagara. 10 a.m.; Mount St. Mary's Hospital, Lewiston. 8 p.m.; St. Mark's Episcopal Church, 61 Payne Ave., North Tonawanda. 7:30 p.m.
MAYOR'S HALLOWEEN PARTY: For children up to 10 years of age, YMCA, East Avenue, Lockport. 6 to 8 p.m.
WORKSHOP: Issues affecting the grieving process, offered by the Circle of Hope Center at Niagara Hospice, Bacon Memorial Presbyterian Church, 166 59th St., Niagara Falls. 7 p.m. Call 283-5744 for reservations.
SUPPORT GROUP: For general bereavement, Niagara Hospice Service Center, 4675 Sunset Drive, Lockport. 5 to 6:30 p.m.
EYE OPENER BREAKFAST: Health Care Issues Facing the Niagara Community, held by the Niagara Falls Area Chamber of Commerce, Quality Inn at the Falls, 443 Main St., Niagara Falls. 7:45 a.m. Call 285-9141, extension 210 to register.
SUPPORT GROUP: For women who were sexually abused as children, Niagara Falls Memorial Medical Center, Niagara Falls. 7 to 9 p.m. Call 745-7826 for meeting location.
PERFORMANCE: Twelve Angry Jurors, presented by the Theatre Department, Fine Arts Theatre, Niagara County Community College, 3111 Saunders Settlement Road, Sanborn. 8 p.m. Continues Friday and Saturday at 8 p.m. and Sunday at 2 p.m.
CODEPENDENTS ANONYMOUS: Support group for those who have difficulty maintaining functional relationships, First Free Methodist Church, Hamm Road and Locust Street, Lockport. 7:30 p.m.
SEMINAR: To give caregivers an idea of what dementia is like and what lies ahead for afflicted individuals, Orleans-Niagara Board of Cooperative Educational Services, Sanborn. Fee: $9. 7 to 8:30 p.m. Call 731-4176, extension 452 to register.
AL-ANON: When someone else's drinking affects your life, Immaculate Conception Church, Ransomville. 7 p.m.
BLOOD PRESSURE CHECK: American Red Cross, 719 Ashland Ave., Niagara Falls. Free. Noon to 2 p.m.
HAUNTED CORRIDORS: Kiwanis Park, Eighth Street and Oxbow Lane, Lewiston. 6 to 10 p.m. Continues Friday. Halloween Spooktacular: Today from 4 to 6 p.m.
MEETING: Niagara Oncology Association, therapy group, Hooker Auditorium, Niagara Falls Memorial Medical Center, 621 10th St., Niagara Falls. 1 p.m.
GINGERBREAD PROJECT: To create gingerbread kids and country angels wall hangings, Kenan Center, 433 Locust St., Lockport. 7 to 9 p.m. Call 433-2617 to register.
WNY CANDLELIGHTERS: Support group for families who have a child with cancer, Hooker Auditorium A, Niagara Falls Memorial Medical Center, 621 10th St., Niagara Falls. 1:30 p.m.
TRICK OR TREAT: The Summit Park Mall's annual day to allow trick or treaters to collect free treats from participating mall stores, 6929 Williams Road, Wheatfield. 5 to 7 p.m.
FAMILY NIGHT: Niagara Falls Family YMCA, 1317 Portage Road, Niagara Falls. 7 to 10 p.m.
HALLOWEEN CONCERT: And parade, 60th Street Elementary School, 60th Street, Niagara Falls. Niagara Middle School Chorus: 11:15 a.m. Parade: 1:30 p.m.
SENIOR CITIZENS' CARDS: For Wheatfield senior citizens, 2800 Church Road, Wheatfield. 9 a.m. Business meeting: 10 a.m.
PERFORMANCE: The Goodbye People, performed by Four Seasons Players, Taylor Theatre, Kenan Center, 433 Locust St., Lockport. 8 p.m. Call 439-4111 for reservations.
HISTORIC HAUNTINGS: Tour the old stone buildings, Old Fort Niagara, Youngstown. 7 to 10 p.m. Call 745-7611 to register.
CLASS: For diabetics and family members, auditoriums, Niagara Falls Memorial Medical Center, 621 10th St., Niagara Falls. 1 p.m.
BUNNICULA: Story hour from the Deborah and James Howe stories, for children of all ages, with games, prizes and arts and crafts, 10:30 a.m. Bunnicula will be at the library after the story hour until 1 p.m. and from 2 to 4 p.m.
PANCAKE BREAKFAST: The Board of Associates of Mount St. Mary's Hospital's 27th annual pancake breakfast, Knights of Columbus Hall, 715 Third St., Niagara Falls. Tickets: $3. 8 a.m. to 1 p.m.
Listings should be mailed two weeks in advance to: Niagara Community Calendar, c/o The Buffalo News, 8890 Porter Road, Niagara Falls, N. Y. 14304.