Food & Friends, a meal preparation and delivery organization for people with AIDS in the Washington area, will hold a volunteer orientation tomorrow. To sign up, call Jennifer at 202-863-1843.

The University of Maryland International Music Competitions, presented by the Maryland Center for the Performing Arts, needs volunteers to provide housing for contestants for the Third Edition of the Marian Anderson International Vocal Arts Competition and Festival to be held at the University of Maryland at College Park from July 15 through 24. Volunteers who provide accommodations and transportation for 40 international contestants will receive a limited number of complimentary tickets to competition rounds, festival recitals and the competition finals concert with the Baltimore Symphony Orchestra at the Kennedy Center. Volunteer ushers, office assistants and drivers also are needed. Call 301-405-0383.

Calvary Women's Shelter needs volunteers to help with dinner and in the evening and overnight at its 25-bed shelter for homeless women. Call Carrie at 202-783-6651.

The Prince George's County SPCA/HS needs temporary foster homes for dogs and cats. The SPCA/HS will provide food and medical care for the animals. Call 301-262-5625, press 2 and leave a message.

The National Spinal Cord Injury Association in Silver Spring needs volunteers to stuff envelopes, attach labels and perform data entry. The association is next to the Silver Spring Metro station. Call Joan Greene at 301-588-6959.

The ARC of Prince George's County in Largo, serving mentally retarded adults and children, needs volunteers to fill a variety of positions in its medical day-care program, infants and toddlers program, employment and residential programs and administration and support services. Call 301-925-7050, Ext. 255.

SHARE Food Network, a self-help and resource exchange, needs volunteers to help pack food boxes for needy families. Call 301-864-3115.

The Retired Volunteer Service Corps of the University of Maryland at College Park has immediate openings for mature men and women to volunteer. Departments with current position vacancies include the Career Center, the Concert Office, English Editing for International Graduate Students, the Learning Assistance Service, the Writing Center and the Art Center. Call Jed Collard at 301-226-4750.

NASA-Goddard Space Flight Center Visitor Center in Greenbelt needs volunteer tour guides, front desk information aides, office assistants and presentation assistants. Call 301-286-9041.

The Law Foundation of Prince George's County needs volunteer Spanish-to-English translators. Call Ellen Bingham at 301-864-8353.

The Prince George's Community College, Suitland Family Life and Enrichment Center and the Maryland Black Mayors Inc. are hosting "Summer Healthfest 1999: The Promotion of Wellness" from 8 a.m. to 6 p.m. Aug. 7. The goals of the event, at Prince George's Community College, are to mobilize a community-led health advocacy group and to establish a health promotion movement throughout the county. The day's activities will include community dialogues; partnerships to engage a variety of organizations, coalitions and their resources; and an interactive community health festival.

Volunteers are needed to conduct workshops, seminars, health tests and screenings. Volunteers also are needed to conduct fitness demonstrations and exhibits and to provide information tables. Call Sylvia Quinton at 301-386-4337.

If you would like to volunteer, please contact the agencies directly. If you would like to submit a notice for Volunteers, fax to 301-952-1397; e-mail to pgextra@washpost.com; or write to Volunteers, Prince George's Extra, The Washington Post, 14402 Old Mill Rd., Suite 201, Upper Marlboro, Md. 20772.