Ok, I want to create sort of image gallery in flash for my mother's business.

Here's a quick mockup

What would I need to do to achieve this?

Here's what I've got so far:
Rooms 1 - 4 will be buttons which will scroll up and down via scrollbar 1

Room X thumb 1-4 will appear depending on which of the rooms are selected from the left navigation bar (rooms 1-4). this will be controlled via scrollbar 2 at the bottom

Room X Thumb X Image will change depending on which Room X Thumb 1-4 is selected.

How would I do this? I'm a beginner.