VST - Sound's not working

I got a new cubase le5 and a lexicon lambda. i set in the device panel to Lambda ASIO, and i dont hear anything , and the output check in the audio monitor (windows 7) dont show any activity.
can someone help me ?

http://www.steinberg.net/forum/viewtopic.php?f=25&t=10051

Do you have your speakers/headphones connected to the Lambda?

What exactly are you trying to do? A few more details would be useful.

Check your VST Connections Input/Output and also you track’s Input/Output to start with.