Loading into a container MC after attachMovie

Never came across this problem before, but now I have.

How can I load into a attached Movie? So right now I have

sideCont.attachMovie(“sideMenuMC”, “sideMenu”, 1);

and sideCont loads sideMenuMC. YAY!

However there is a container within sideMenuMC how can I load into that?

say container inside is contMC.

Thanks for any advice.

MT