How do I setup multiple lists

Hello I am having difficulty setting up multiple lists. Here is what I would
like to happen.
a drop down list appears based on a previous selection
EX: if a1=1 then b1 displays list 1
if a1=2 then b1 displays list 2
if a1=3 then b1 displays list 3
Any help is greatly appreciated.

Take a look here:

http://www.contextures.com/xlDataVal02.html

HTH

"wfrp" wrote:

> Hello I am having difficulty setting up multiple lists. Here is what I would
> like to happen.
> a drop down list appears based on a previous selection
> EX: if a1=1 then b1 displays list 1
> if a1=2 then b1 displays list 2
> if a1=3 then b1 displays list 3
> Any help is greatly appreciated.