Looking for volunteer opportunities? The following groups in your area need volunteer help for a day, a week or on a regular basis. Nonprofit groups in need of volunteers should send notices to Volunteers, The Washington Post, 1150 15th St. NW, Washington, D.C. 20071. The list is published the first Thursday of the month.

Horse-Riding Program

The Therapeutic and Recreational Riding Center, which provides equestrian activities to people with physical and mental disabilities, needs volunteers to assist riding instructors and therapists with grooming, tacking and walking the horses. Volunteers don't have to be equestrian experts. The program involves physical and occupational therapy as well as behavioral management for the clients, such as children with autism. Volunteer training is available. The center is at 3750 Shady Lane, off of Burntwoods Road in Glenwood, in western Howard County. For more information, call Helen Tuel at 410-489-5102.

Teaching GED Classes

The Rosemary Hills Community School, which is associated with the Inter-Agency Coordinating Board of Montgomery County, needs volunteers to teach GED classes in math, science, social studies, and English as a second language. No teaching experience is required, and training is provided. The time commitment is one evening per week from 7:30 to 9:30 p.m. weekdays. The school is at 2111 Porter Rd., near Sundale Drive, in Silver Spring. For more information, call Sophia Ryder between 6 p.m. and 10 p.m. at 301-650-6405.

Disaster Services Assistants

The Montgomery County American Red Cross Emergency Services Office needs volunteers to be ready to go out on emergency calls. Individuals will be trained to provide food, shelter and clothing at emergency sites, as well as to do assessments of injuries, fire damage and the consequences of other emergencies. Volunteers are trained in classes held at the Montgomery County chapter office at 2020 East-West Hwy., Silver Spring, or at other sites throughout the metropolitan area. Office work, such as phone-answering, also is needed once a week, on weekdays, between 8:30 a.m. and 4:30 p.m in the Montgomery office. For more information, call 301-588-2515, Ext. 218.

Advocates for Abused Children

Voices for Children, of Howard County, needs advocates and mentors, especially male volunteers, for abused, neglected and at-risk children. Volunteers work with the children, their families, agency professionals and the courts to ensure that children have safe, permanent homes and are receiving appropriate services. There is a mandatory, 30-hour training program. Volunteers must be at least 21 years old and are required to make a one-year commitment. The work schedule is flexible. The agency's office is at 5550 Sterrett Place, suite 215, Columbia. For more information, call 410-740-0933.

Visiting Artists for Children

Art is the heART, a pediatric program of the Washington Very Special Arts and in partnership with the Visiting Nurse Association of Maryland, Virginia and the District of Columbia, needs artists to help children engage in creative activities at home or while in hospice care. Volunteers will sing, play musical instruments and lead activities such as painting. The children are disabled or ill, some with life-threatening conditions. The organization needs musicians, dancers, storytellers, poets, puppeteers, photographers, actors and visual artists (painters, sculptors and others). Training and support are provided. Washington Very Special Arts is based at 1100 16th St. NW, Washington. For more information, contact Judy Rollins at 202-296-9100, Ext. 208.

Computer Teachers

The Housing Opportunities Commission (HOC) employment and training program needs volunteers to help residents of HOC-subsidized housing develop the computer skills needed to get jobs. Volunteers teach people how to use computers in classes held at various Montgomery County locations. The curriculum focuses on the Internet, Windows 95, Word, Excel and e-mail. For more information, call Ronnie Haber, 301-962-5536.

Readers for the Blind

The Metropolitan Washington Ear Inc. needs volunteers to read magazines, newspapers and other publications for recordings for use by the visually impaired. Volunteers are needed for two hours a week. The office is at Marvin Memorial Methodist Church, 35 University Blvd., Silver Spring. For more information, call Washington Ear between 8:30 a.m. and 5 p.m. weekdays, at 301-681-6636.

Mentors for Youths

The Anne Arundel County Department of Aging's SCOPE (Seniors and Children Organized for Prevention and Education) needs mentors to serve as positive role models for young people, ages 18 and younger, who have histories of drug abuse. Mentors provide companionship in activities such as bowling, going to the movies and doing homework. A one-year commitment is required. Volunteers are trained at the Anne Arundel County's Department on Aging Office in the Heritage Office Complex Building, 2666 Riva Rd., suite 400, Annapolis. For more information, call Bob Molder at 410-222-4464.

Office Workers

The Candlelighters Childhood Cancer Foundation (CCCF), which provides resource information for families of children who have cancer, needs volunteers to answer the telephone, take messages for social workers, and to do office work, such as stuffing envelopes, typing and filing. People with expertise in computers, office management and newsletter preparation also are needed. Volunteers work at home or at the CCCF office, 7910 Woodmont Ave., suite 460, Bethesda. Volunteer training is provided. A six-month commitment is requested. For more information, call Beth Warner or Kate Shafer at 301-657-8401.

Decorative-Arts Museum

The Hillwood Museum and Gardens is recruiting house and garden docents to work at the museum when it reopens in 2000. Docents educate visitors about the art and horticultural collections at the former private home, 4155 Linnean Ave. NW, near Rock Creek Park in Washington. The museum features French and Russian decorative arts collected by Marjorie Merriweather Post, as well as the gardens she created. Teaching or docent experience is preferred. Participation in orientation and continuing education classes is required. For more information, call Angie Dodson at 202-686-8500, Ext. 8618.

CAPTION: Volunteers guide a student riding a horse at the Therapeutic and Recreational Riding Center in Glenwood in Howard County. The center offers equestrian activities to people with physical or mental disabilities.