My goal is to be able to play my keyboard using TruePianos as VSTi, with BIAB adding accompaniment. I've installed TruePianos as VSTi in BIAB and that seemed to have worked, but I have no idea what to do now. How do I configure things so that if I play my keyboard I will hear it through BIAB?

Configuration: I have a Yamaha P90 with MIDI out connected to Audiophile 2496 in a windows XP Dell. Audio output of 2496 goes into my stereo. I also have a standalone version of TruePianos installed and that works fine, so I'm confident the audio and soundcard, etc are working. Also I can generate BIAB chord accompaniments and they work fine. I need beginner level help, my understanding of how this all fits together is minimal. tnx