How connect Duemilanove & Breakout for MAX7456 OSD

Hi,

I have just bought Arduino Duemilanove and Breakout for MAX7456 On Screen Display boards from SparkFun and connect them as below:

Duemilanove PINS --> MAX7456 OSD PINS
10 ---> CS
11 ---> DIN
12 ---> DOUT
13 ---> SCK
5V ---> +5V
GND --> GND

Compiled sample code found in this thread "Arduino Forum ? General ? Exhibition ? Arduino + MAX7456 OSD" and uploaded it to the Duemilanove board. Then attached video-out from video camera to "Video In" on the OSD board and "Video Out" from the board to the video-in on TV. But it seams that there is no any signal on my TV. So, what's wrong? Should I do something different?

Rustam