lists side by side

Andy Knipp

Not certain how to do this, but I need to make a template with a scrolling list that has lots of items (say 100), customer wants:

|------------| |---------------|
| item1 | | selected 1 |
| item2 | | selected 2 |
| item3 | | selected 3 |
|------------| |---------------|

So two lists. if item 1 is highlighted and you click Add, it should go to the selected list.

Moving between the 2 by button click is not too tough. But how can I put a list, two buttons and a list in a single row ?

Tips/Pointers/RTFMs appreciated

Andy