Which dashboard are you using? The "stock" one or did you install the java-based SmartDashboard?
A) Open a web browser while the station is on, the robot is on, and the camera is on/plugged in etc -- to 10.xx.yy.11
For team=2522
http://10.25.22.11
For team=123
http://10.1.23.11
You should see a user interface for the camera. If it asks for login information, use FRC as the username and FRC as the password (all caps).
If you are able to see the above web page, you're doing quite well. If not, then there's a configuration or connectivity issue. Report back on this.
B) If you're using the smartdashboard, please note that it requires the use of "anonymous viewing" to be enabled on the camera. I am at work and so I cannot lead you directly through this. However, look in video setup and a few of the other setup pages and CHECK the box that says allow anonymous viewing. Then SAVE the changes.
bob