Melwood, an organization serving people with developmental disabilities, seeks volunteers to work in the Camp Springs Thrift Store. Students can earn Service Learning Hours required for high school graduation, and all volunteers can earn store discounts, as well as meet friends and gain retail experience. For more information, call Stephanie Gagne at 301-599-4560.

Volunteer High Point, the volunteer organization at High Point High School in Beltsville, has immediate volunteer opportunities in several areas. The group needs an expert in Macintosh computers to review software needs and 35 Macs in the academic center; people to work in the school's visitor reception area; someone to work as the band director's aide; and volunteers interested in performing office functions. For more information, call Ted Ladd at 301-572-6429.

The American Cancer Society Road to Recovery program needs volunteer drivers to take people with cancer to their treatment appointments. For more information or to volunteer, call Shaconna Gorham at 301-933-9350.

The Higher Achievement Program needs volunteer tutors for small groups (two to three students) of promising and motivated fifth- through eighth-graders using the Higher Achievement Program's curricula in mathematics or literature, 6:15 to 8 p.m. Tuesday or Thursday nights. Classes begin Oct. 12. For more information, call Carolina Lugo at 202-842-5116.

Prince George's County seeks volunteer groups and individuals for its adopt-a-median program. Volunteers or groups will select a median in your community and devise a landscaping plan. The Department of Public Works and Transportation then will provide assistance with the selection and location of plants or shrubs and will deliver mulch for the planting beds. For more information, call 301-499-8520.

The Prince George's County Department of Environmental Resources is putting together Stream Teams to assess the health of local waters. Volunteers are needed to collect and identify aquatic organisms and assess the habitat as part of an effort to evaluate water quality. Sessions are planned for 9 a.m. to 4 p.m. Saturday and Oct. 23. For more information or to register, call Sharon Meigs at 301-883-5898.

The Humane Society of Southern Maryland seeks foster homes for dogs and cats and adoption-day helpers. For more information, call Jane Heller at 301-630-6110.

CASA of Maryland seeks volunteer instructors and tutors in various subjects. A computer instructor is needed to teach basic-level computer classes for as many as 10 students with limited or no previous computer experience. Good communication skills and some knowledge of Spanish are needed. Spanish literacy tutors also are needed to tutor adult Spanish speakers in the basics of reading, writing and math. Empathetic, patient Spanish speakers are needed to teach one or two adults weekly under the supervision of a trained teacher, who will provide the curriculum. In addition, an ESL instructor is needed to teach basic-level English to adults once a week for at least eight weeks. For more information, call Naomi Nim at 301-431-3721.

The Prince George's Community Foundation needs volunteers to help with the 13th Annual Winter Festival of Lights by collecting food for the needy at the festival, which begins Nov. 26 at Watkins Regional Park in Upper Marlboro. For more information or to volunteer, call Kathy Garrity at 301-249-9220 or Rita Brown at 301-464-6706.

Meals on Wheels of Cheverly needs delivery drivers to take meals to homebound residents in Prince George's County north of Route 50, from Colmar Manor and Bladensburg to Bowie. Volunteers are needed to work one to four days a month, for about two hours a day between 10:30 a.m. and 12:30 p.m. For more information, call 301-772-5030.

Raise the Roof, a day-long community housing renovation effort bringing together local nonprofit organizations, churches and local governments to repair a dilapidated home in Hyattsville, will take place Saturday and needs as many as 30 volunteers to prune trees and shrubbery; remove dead trees; clean the yard; paint the living room; replace gutters and screen doors; install a ceiling fan; and more at a house on Jefferson Street owned by a blind couple. Donations of paint, lumber, tools and refreshments also are needed. For more information or to volunteer, call Bill Castle at 301-985-5000.

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.