The Patuxent Research Refuge needs help removing nonnative invasive plants from the wildlife habitat; volunteers are asked to wear long pants and sleeves and to bring gloves and hand tools. 10 a.m. Sunday, National Wildlife Visitor Center, Powder Mill Road, between the Baltimore-Washington Parkway and Route 197, Laurel. Registration required. Call 301-497-5887.

The Sudden Infant Death Syndrome (SIDS) Charity Walk needs help with fundraising, setup, registration, food service and cleanup for the event, which takes place from 8:15 a.m. to noon Sept. 11 at Buddy Attick Park, Greenbelt. Proceeds will benefit research and families who have experienced SIDS. High school volunteers will be eligible to receive certification for community service hours. Call Joani Horchler at 301-322-2620, or e-mail sidses@aol.com.

The Court Appointed Special Advocate program of Prince George's County needs volunteers, especially those who are bilingual, to provide a voice for abused and neglected children in foster care. Volunteers meet with children, families, foster families, social workers and lawyers and provide recommendations to the court. Training sessions will be 10 a.m. to 4 p.m. Tuesdays and Thursdays, Sept. 6 through 22; or 6 to 9 p.m. Mondays and Wednesdays, Oct. 3 through Nov. 7. Call 301-209-0491.

The National Park Service, Greenbelt Park and the REI company need volunteers 14 and older to resurface and repair trails in the park using shovels, rakes and wheelbarrows. The event will be held 8:30 a.m. to 2 p.m. Sept. 10; the rain date is Oct. 15. Volunteers younger than 18 must be accompanied by an adult. High school students will be eligible to receive certification for community service hours. Participants should wear heavy shoes and dress for the weather, and bring gloves and insect repellent. Lunch will be served. Registration is required. The park is at 6565 Greenbelt Rd., Greenbelt. Call 301-982-9681.

The Seat Pleasant Patriot Technical Training Program seeks an AmeriCorps-VISTA worker to provide program and technical support in science and engineering for students in grades 5 through 12. The volunteer also will provide computer database technical support. Evening and weekend hours are available; a stipend is provided. Call Thurman Jones, 301-925-9350.

The Smithsonian Institution seek volunteers, especially those who are bilingual, to work on the information desks at its various museums and galleries and to answer the Smithsonian public inquiry telephone lines. Training is provided. The time commitment is 31/2 hours weekdays or on alternate weekends. To apply, call Phil Almeida, 202-633-1000, or go to www.si.edu/resource/faq/volunteer/visinfo.htm.

The American Red Cross, Greater Chesapeake and Potomac Blood Services Region, needs volunteers 14 and older to greet donors and serve refreshments at blood drives and donor centers. Training is provided. The time commitment is four to six hours, two days a month. Call 800-272-0094, Ext. 1, or e-mail karlofft@usa.redcross.org.

Hospice of the Chesapeake seeks volunteers to provide support and companionship to patients, families and caregivers. Duties may include two- to three-hour weekly visits to help with letter writing, reading, transportation to medical appointments and other needs. Community outreach volunteers are also needed to work at health fairs and other community events. Call Julie Medlin at 301-499-4500.

The Prince George's County Health Department needs Medical Reserve Corps volunteer physicians, nurses, pharmacists, mental health workers and other medical personnel, social workers, computer technicians, administrative and clerical assistants, client greeters and interpreters to help in the event of widespread disasters or emergencies. Call Cynthia Baker at 301-883-7802.

AmeriCorps seeks coordinators to organize volunteers. A one-year commitment will begin Sept. 21. Extensive training, a $13,000 living allowance, health care and a post-service education award of about $4,700 are included. The ideal candidate will have strong writing abilities, basic computer skills and transportation. Call 410-514-7270 or go to www.volunteermaryland.org.

Partnership for Animal Welfare, a volunteer rescue group that finds homes for abandoned or neglected dogs and cats, seeks volunteers to handle animals at weekend adoption shows, transport them to shows and veterinary appointments, provide foster care, answer phone and e-mail inquiries, and perform other tasks. Attendance at a volunteer orientation session is required. Call 301-572-4729 or go to www.paw-rescue.org.

Capital Hospice seeks volunteers to visit patients in their homes, provide companionship for the patient and respite for the family, run errands, furnish transportation and help with administrative work in the Beltsville office. Training is provided. Call Rick Ransom at 301-572-2489.

SHARE provides food to families and individuals at reduced prices. Volunteers are needed to help with packaging and distribution at the SHARE food warehouse, 5170 Lawrence Pl., Hyattsville. Call Ninochika Twitty at 301-864-3115.

-- Compiled by LISA MARTIN

To Submit an Item

E-mail: pgextra@washpost.com

Fax: 301-618-1780

Mail: Volunteers, Prince George's Extra, The Washington Post, 9500 Arena Dr., Suite 400, Largo, Md. 20774.

Details: If you want to volunteer, contact the agencies directly.