heres a "nice: but not perfect attempt.. i'll move the background light behind the person next time.
Sb24 snooted at various powers onto the background (causing partial hair light and visable in left temple)
Sb600 camera right in backed shoot through at 1/8th for fill
Sb28 camera left bounced in backed softbox umbrella, down @ 45 degrees, at 1/4 power
Triggered with Cactus V4's
Camera: Nikon D80
Shutterspeed: 1/160
Aperture: f/4.0
Focal Length: 56 mm on a 24-70 f/2.8
ISO Speed: 200
(iso 200 to save battery juice and use a stop less on each strobe)

background light at
1/8th

background light at
1/16th
heres the set-up

it would probably pay to hold the camera straight