Hi charsea,
You can download/install an addin from
www.asap-utilities.com (ASAP
Utilities) and from the menu ASAP Utilities | Formula | Change reference
style, you can do all selected cells at once. Otherwise you'll need to do
it a cell at a time (notwithstanding those cells you can confirm at once w/
Ctrl + Enter). To do this, select the entire formula in the formula bar and
toggle through the reference styles with your F4 key.
HTH