Adults in six major U.S. cities whose households bring in more than $100,000 a year say microwaves and answering machines rank as the "most important lifestyle necessities," a survey reported Monday.

In the poll, 600 adults in New York, Chicago, Washington, Houston, Los Angeles and San Francisco also picked home computers and VCRs as items they would find it hard to live without.The study asked the affluent to distingish between luxuries - "things they may enjoy owning but could live without" - and necessities - "things or services that have become so important they are thought to be necessities."

The survey, conducted for the Doyle Graf Raj advertising agency by The Roper Organization, showed that 79 percent believe they cannot live without a microwave, 49 percent without an answering machine, 42 percent without a home computer and 36 percent without a VCR.