AttachMovie question

ok…let’s see if I can explain this…
I’m making a game…and I want to change my background image depending on where the character is.

I thought I would make a MovieClip…with all the different background images on different keyframes.

My question is…can I use AttachMovie, and if so…how do I reference the particular frame that I want to…?

I’ve never used AttachMovie before, and wasn’t sure of the syntax…and how to reference it…to go to a particular frame.

Suggestions?

Thanks