Scrolling Movie Clip with a Button?

I am loading an external SWF into an empty movie clip and would like to use buttons to scroll the contents in the movie clip a certain distance back and forth.

The external SWF file is comprised of 6 images (for sake of easy description) and only 3 are shown in the empty movie clip. I would like the scrolling to simply move over 1 image width (say 175px), back and forth when clicked.

I didn’t find too much on this besides using components and I am not familiar with the use of a button component at all. I have used regular buttons with actionscript a ton of times.

Thanks.