TI's USB and Analog outs simultaneously

[jim_justice]

Yo wazup! just bought me a TI desktop and im lovin it, however
I hoped that i could use the three USB outs simultaneously with the 3 analog outs.
(which I send to my analogue ins on my soundcard, EMU 1820MM)
This way I can have 6 separate TI channels in my mixer in the sequencer which enables
me to give them all diffrent fx such as sidechaining and compression.
However this does not seem to work!
the analog outs do not seem to generate a sound.
I do not use the TI as a soundcard. WHat do I do wrong, or is this simply not possible?
pleez help me out!
I use cubase SX3.