Excel 2000 VBA Question

How do i "catch" mouse clicks in Excel 2000?

i want to "get" the data in each cell the user clicks on and convert it to string. as the user keeps on clicking on cells (same or different cells), the string becomes longer.

Thank you very much in advance.

i dont think there is a cell_onclick event. the only way i think of it would be subclassing the mouse event i guess to trap all mouse messages.