stacked column question
 

I have the following data:
A B C D E
Jan 09 10 10 100 90
Feb 09 15 14 90 90
Mar 09 15 13 95 90

i want to create a stacked column chart where columns B and D are stacked
together, and columns C and E are stacked along side the B/D column, for each
month. How do I do that?