CHARLOTTE, N.C. -- When Jim Walters retired from Bank of America in December 2001, after decades in the business, he thought of looking for a similar job. He was only 56, after all.

But in the months after Sept. 11, 2001, few companies were hiring.

"The headhunters Bank of America connected me to said, 'Don't bother,' " Walters said. "I had a year's pay coming to me and I couldn't play golf in the winter, so I taught myself how to build a Web site."

A short time later, Great Golf Memories, a company that sells golf equipment, accessories and novelties, was born.

"I wanted something that could keep me occupied into my 70s," Walters said, "and still allow me to play golf."

As people retire earlier and live longer, many are going back to work to pass the time or pay the bills.

Some, like Walters, are making that work fun, starting Internet businesses based on hunting, fishing, golfing or the beach.

These entrepreneurs say the work combines their talents from the corporate world with the leisure activities they want to enjoy in retirement.

Because such businesses can be successful and easy to maintain, they give retirees the money to afford their hobbies and the time to enjoy them.

There are 76 million baby boomers in the U.S., and as many as 80 percent of them plan to work into their retirement years, according to AARP, formerly the American Association of Retired Persons.

In an AARP contest called "My Dream Job," people have shared their visions of the perfect job for workers 50 and older.

"Ninety percent of what we're seeing is people wanting to turn their hobbies into some kind of viable business," said Deborah Russell, the organization's director of work-force issues. "It's easier than trying to start a company with a product you know little about."

The formula has worked for Walters, now 62.

He started small, with one or two products on his Web site, he said. Now, Walters gets orders from across the country and he has a full-time staff to handle customer service.

Others have followed his lead, like Harvey Grasty, Walters' brother-in-law, who worked on Great Golf Memories before leaving to create his own Web site, which sells nautical gifts and decor, in 2006.

"Part of the success and gratification of having a business like this is, we all have different themes that match up with our past and hobbies," said Grasty, who worked as a manager at Apple Computer and in the commercial printing ink industry before retiring. "We have a passion for the products and (know) how they'll do in the marketplace, based on our past experiences."

Walters, Grasty and other Charlotte retirees who have started Internet businesses have been meeting for breakfast weekly since 2004.

The sites aren't difficult to maintain, the men said on a recent morning. But starting them can be time-consuming, often requiring 12-hour days in front of the computer, they said.

Now, most spend about two to six hours a day online.

Some retirees say they've started Web sites to help afford health insurance or vacations. Others say it's not about the money at all.

"It keeps me younger," said Nancy Fahey, 62, of Gainesville, Ga., who started the Professional Support Network, a business that provides customer support for online marketers, in 2005. "And I can spend time with my husband. If we want to take a trip, OK, we take a trip. I pack up my laptop, and off we go."

Marc Polish, 66, of Ventnor, N.J., started two Internet businesses after retiring, partly because he loves interacting with people across the country via the Web, he said.

"I was retired for about an hour," said Polish, whose sites sell monogrammed toilet paper and novelty clothing and accessories. "I got up the next morning, and I had nothing to do, so I started a Web site. It's not the money aspect of it, it's just, I love it."

Polish knows other retirees who have done the same, including an 80-year-old former plastic surgeon who now scours flea markets for old pipes to sell on eBay, he said.

"You can sell anything in America," Polish said. "You've just got to do it."

Some people start Internet businesses before they retire, hoping to establish a career they can maintain into old age.

"I wanted something I could do that appeals to my creative side," said Pam Hawthorne of Myers Park, N.C., who started a Web site two years ago that sells high-end furniture and accessories for vacation homes. "It was a brand-new venture."

Hawthorne, 54, is a managing partner of an advertising agency and said retirement is a long way off. She plans to continue the site after she leaves the corporate world.

"It's kind of a canvas, and the palette is constantly evolving," she said.