How to create two headphone outputs in Cubase LE 7?

I purchased the focusrite scarlett studio that came bundled with Cubase LE 7 and I’m trying to figure out how to get two headphone outputs, one from the scarlett 2i2 and another from my external soundcard(usb). I’ve read some forums already that say to add a bus in VST connections but that doesn’t show anything else but the scarlett 2i2. Even if I switch the ASIO driver to “generic low latency ASIO driver” my sound card doesn’t come up and it plays trough the computer speakers.

Install Asio4All and try it