Toolbar: Styles 
Menu: Format
Table
StyleAt the Command prompt,
enter tablestyle.
Command entry: tablestyleSpecifies a name for the new cell style and specifies the existing cell style on which the new cell style will be based.
Names the new cell style.
Specifies an existing cell style whose settings are the default for the new cell style.
Returns you to the New Table Style dialog box, in which you define the new cell style.