Button Linking to file

Hi all,
Kinda new to flash CS4 so this might be a pretty simple question, but I can’t seem to find the answer anywhere.
After defining my button as a button and then going into the F9 actionscripts menu, I don’t know what code to input to make the button link to a specific file. I’m doing this as an autorun swf for a CD I am making.

Thanks,
Hasaki