Keeping two listboxes synchronized

Question

Greetings,

I am busy developing an application which has two listboxes containing two variations of the same data.
I need to be able to keep the selected items synchronized.
Both listboxes must have the same item selected at the same time.
I need the two items to be selected next to each other.

The other problem is that I need to scroll the listboxes together.
Both when scrolling down and then across.

Does anyone out there have any ideas, or hopefully samples, to achieve this?

Thanks in advance,

zaroblan