Tweaking Max lighting

[TomA]

I've modelled this theatre however i want to add dark shadows to the underside of the balcony soffits.

 

http://i260.photobucket.com/albums/ii31/puttyface_101/spotlight%20new/theatretest1.jpg

 

I've done a very quick sketchy photoshoped version of what i'm after, the change is fairly subtle.

 

http://i260.photobucket.com/albums/ii31/puttyface_101/spotlight%20new/theatretest1darkbits.jpg

 

The problem is i want to do it as an animation so can't just rely on photoshop.

 

Any idea how i can achieve this look in Max?

 

btw i'm using the default scanline renderer... i know it's stone age but hey... i also use Vray at home but work won't yet fork out for it!