Web sites for retirees and soon-to-be seniors can provide help with health, finances, and hobbies. Here are some of the best:

WWW.AARP.ORG The topics at the AARP site cover the waterfront. For example: using a PC, touring Norman Rockwell's Vermont, or pestering politicians for drug insurance.

WWW.SSA.GOV You can apply for Social Security or estimate your future check. Among the answers to common questions--yes, your ex may be able to collect based on your account. You can connect to a special site for Medicare.

WWW.PROFESSORBEYER.COM What happens to the dog or cat? Prof. Gerry Beyer of St. Mary's University School of Law in San Antonio provides an expert overview of estate planning that includes care for pets.

WWW.ELDERHOSTEL.ORG Fifty-fives and up can mix travel and learning through this venerable group. A few trips: exploring the culture of French Polynesia; a weekend in Richmond, Va.; a walk in Switzerland that welcomes grandkids 8 to 11.

WWW.BENEFITSCHECKUP.ORG This interactive site helps eligible elders find programs to assist with finances, housing, and other needs.

WWW.HEALTHFINDER.GOV Links to health information from government and other sources. Among the subjects: air pollution, hearing loss, and medical quackery. You can search for a doctor or details on a specific ailment.

WWW.BANKRATE.COM Calculators help you run the numbers before deciding to refinance a mortgage, set up a savings plan, or move to a new city with a different cost of living.

WWW.VOLUNTEERMATCH.ORG Put spare time to good use with a database of local projects needing help. Among recent efforts: driving kids to camp and assisting with home fix ups.

WWW.GRANDSPLACE.COM Nearly 2.4 million grandparents are raising grandchildren. This support site includes guidance on legal rights and government aid.

WWW.ASAGING.ORG/LGAIN A section of the American Society on Aging's Web site that hosts the Lesbian and Gay Aging Issues Network.

Go to www.usnews.com/retirement for an interactive planning calculator and other resources.