[SOLVED] VCI 100/soundcards/headphones and RCA

I cannot configure the mixvibes 3DEX software for the VCI 100 to play one deck via my external soundcard so that sound is produced through the RCA output and so that the other deck plays through the internal soundcard, producing sound through headphones, at the same time.
I am using Vista. Is there anyone who can talk me through how to set the software/soundcards up so that I can play one track out my RCA/Stereo and another in my headphones please?
Thanks
I am using Vista. Is there anyone who can talk me through how to set the software/soundcards up so that I can play one track out my RCA/Stereo and another in my headphones please?
Thanks