What version?
This should work in Word 2003 and 2007: right-click in the column or row you
want to delete, choose Delete Cells, then choose either Delete entire row or
Delete entire column.
To add a row or column in Word 2007, right-click where you want the
row/column to go, and choose Insert and then click desired action.
In Word 2003, right-click where you want, then choose Table - Insert -
desired action.
In Excel 2007, to insert or delete, right-click in the row or column where
you want to insert/delete, choose Insert or Delete, then choose either
Entire row or Entire column. (When inserting, the new row/column will go
above/left of the selected cell.)