Flash simple image gallery problem

Hello I have what I think is an easy problem to solve but I can´t find a solution.
I´m creating an image gallery with thumbnails on the right inside a symbol so that
they can all fade in at the same time, and the bigger images on the left that also fade in.

I can only fit 8 thumbnail images at a time, and want to have more than that.
So I´ll add an arrow below the thumbs so that when you click on it, you can see the other thumbs.
I have the first 8 thumbs on the first frame of a symbol and the rest on the second frame.

My problem is that the symbol that contains the thumbs is a graphic symbol, so that the thumbs in it, that are button symbols can be clicked on. I tried using button and movie clip symbols for the thumbnails container but then the buttons (thumbs) can´t be clicked any more.
That was not a problem till I had to add more than 8 thumbs, cause i need to give the container an instance name, and graphic symbols can´t have one.

Here is the link to download the .fla
www.ginkgo.com.uy/old/downloads/handheld_pink.fla

In case I didn´t make my self clear, what I need is to know if there´s a way to have a movie clip or button symbol that can have buttons in it that can be clicked on.

I hope I didn´t give you a headache.

Thanks a lot, Marcelo.