need help using a checkbox to determine if a cell gets summed. i have
designed a worksheet with items in one column, and how much the item is in
another column. what i want to do is to check a box next to an item and have
the cost of that item added to the other items that are checked. if the item
is unchecked, then resum the items that are checked. i would also like to
add an additional check box that will automatically check or uncheck all of
the other checkboxes. any help will be appreciated.