Thanks for the info, that is very helpful.. I will be eventually connecting/recording an accordion. I have an FR7 which is an electronic accordion which I can use as a MIDI Controller or input it directly since it is also a sound module. I also have an acoustic accordion which is mic'd internally or I can use external mics on it. I'm thinking an AI like the TASCAM or Fast Track Pro might be the best bet here, since I can use MIDI, Line, or MICS to record the instrument.
I take your point with the built-in VSC synth. So I went to "MIDI/Audio Drivers setup" in BiaB, and selected "Roland VSC Dxi". However, it seems the sounds are the same as when I select the Microsoft wavetable synth.
I have a USB M-Audio KeyRig 49 Key keyboard hooked and set as the MIDI Input Driver, but it just puts out a generic (piano) sound on the onscreen keyboard and speakers when I play it, it does not respond to any changes I make in the Instrument selection.
Another odd thing, for fun I was able to check the "Use VST/DXi Synth" box and pull up the free Kore2 player, from which I liked the acoustic bass. However when I went back to the selected track in BiaB, it would play the acoustic bass fine, but I could not change it to anything else, the drop-down GM Sounds on the upper-left hand side of BiaB would have no effect. Learning, learning, learning...

WinXP Pro / BiaB 2010 / Fast Track Pro / Ketron SD2