How do I replace x-y coordinates with labels in a chart?

When you create an x-y plot in Excel and turn the labels on, you get the x-y coordinates. I really want the label to be the name of the project or case or whatever I happen to be plotting. How do I replace the X-y coordinates with a real label.

For example, I plot the following table:
Label X Y
Case 1 2.5 3.6
Case 2 3.1 5.8
Case 3 4.9 9.9

When I turn on the data labels each point gets labeled:
(2.5,3.6); (3.1,5.8); etc. What I want to do is label the points as Case 1, Case 2, etc.

There are too many points and the chart changes too much to label manually.
Please help