Is there anyone that can explain how to connect the LEDControl4 Passive to an LED driver that accepts a 0-5V PWM signal?

This is the driver I'm working with:
http://stevesleds.com/uploads/Quad_L...de_1.27.11.doc

I'm thinking it works with a positive signal instead of a negative signal but I'm not sure how to deal with this. Any info would be helpful.