Apple Logic Pro /LogicExpress Discussion

I have a dialog track from a film that I am mixing.  All of the  
scenes for the film were exported as 1 track - for 90 minutes.  I  
need to EQ different scenes - now, here is the question:  Do I need  
to break the track into different channels to have diffent EQ  
settings for each scene, or is there a way I can keep the audio all  
on this one track, and have each scene EQ'ed sperately.  Does my  
question make sense??

John