Flash xml photo gallery grid

Thanks for the great gallery tutorials. I followed it and understand it as far as it is possible for me at this stage and have been able to recreate it.

What I can’t figure out is how I can create a grid with thumbnails on the right-hand side instead of having a scrolling bar at the bottom.

I would like to have my thumbnails displayed on the right-hand side of my image window (4 per row) at Alpha50% and have them fade in as you rollover and show up in the image window as you select them.

Please could anybody help me with this?