[F8] Next and Previous movieClips offscreen replaced by another

[madmath]

Hello,

I've done a search under terms I think this problem is defined by but not come up with anything.
What I'm trying to do is this:

I have a movieClip on screen with 'previous' and 'next' buttons. Upon clicking one of these buttons the movieClip either goes offscreen left or right, and another one comes on in it's place. So it's an image viewer essentially. The movieClip will be the same - it's a scroll looking thing - so I was hoping to use duplicateMovieClip rather than creating many many clips with the same base. I just don't really know where to start on this.

I can post the useless code I have but if anyone can point me in the right direction that would be much appreicated.

Cheers
Matt