A bit of configuration is required to get everything working properly. Start with the Chapter 5 PDF available here:
http://usfirst.org/community/frc/content.aspx?id=10934
The first thing you should do is update the driver station and the cRio, as the chapter outlines (pages 2,3,4,5, and 7). This will set those two devices to specific IP's - 10.xx.yy.zz, as indicated on page 6.
Once you've done that, you can configure the router and the gaming adapter as described on page 10.
When you get everything properly configured and arranged, you can hook it up according to the diagram on page 6. The camera and gaming adapter are each plugged into one of the ports on the cRio, while the driver station hooks up to the router. The laptop shown in the picture hooked up to the driver station is optional, and will allow you (at competition) to see some additional feedback from your robot, if you program it correctly.
I hope this helps. If not, please try to better detail how you had yours hooked up. Indicate the IP values for all the devices, which ports everything is plugged into, etc. Both the driver station and the cRio have numbers next to the ethernet ports for reference.