There is a command, TableUpdateAutoFormat, that has the shortcut Ctrl+Alt+U.
Ordinarily what this does (and very usefully, too) is remove borders from
the default Table Grid table and render it Table Normal. But if you have
selected another style as your default AutoFormat, it might be worth a shot
to select the entire document, press Ctrl+A, and then Ctrl+Alt+U. If the
results are not favorable, Ctrl+Z to Undo.

--
Suzanne S. Barnhill
Microsoft MVP (Word)
Words into Type
Fairhope, Alabama USA
Word MVP FAQ site: http://word.mvps.org
Email cannot be acknowledged; please post all follow-ups to the newsgroup so
all may benefit.

"CWHelp" wrote in message
...
I know how to create a new default table, but is there a way to update all
existing tables automatically with the new default styles other than going
to
each table and applying this new format? My new format repeats the header
row, doesn't allow breaking and is a blue color.