By default, whatever Style or paragraph format applies to the paragraph that is selected when you insert a table defines the formatting for the table. So, if a cntred. bold paragraph was selected, that's what the table will have.

And yes, Word 2010 allows tables to have their own Table Styles. These are accessible via Table Tools|Design, but those don't affect the underlying paragraph formatting.

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Cheers,
Paul Edstein
[Fmr MS MVP - Word]