Five Ways to Retire a Multi-Millionaire

Retirement these days doesn't sound like much fun. Too much scrimping and saving and trying to figure out how to turn a lousy Social Security payment into a government gold mine.

Why not aim higher? What would it take to retire and live like Bill Gates or one of those oil-rich sheiks? Research says millionaire status may not make you happy, but it's worth a shot. Here are some wealth-producing possibilities.