Samson Graphite 49 trouble in Cubase LE7

Hi everyone!

There’s no way I can configure the faders and pan knobs (sliders and encoders, in the Owner’s manual) of my Samson Graphite 49 midi controller to work properly on Cubase LE7. The sliders are treated as Note On inputs, and the knobs won’t respond correctly too!

Is this controller not supported? Could someone help me with that?

I’ve tried following the instructions in this video, but it didn’t help!
https://www.youtube.com/watch?v=7Ed3HFtZ1tg

Thanks!