Hello Zilch,

Band-in-a-Box itself runs great on 64-bit operating systems, but unfortunately the VSC synth doesn't work on 64-bit OS. An alternative synth that you could try out is the ForteDXi - can download a demo from http://www.pgmusic.com/fortedxi.htm

I think the other VSTi synths you're mentioning *should* work fine. Check that they have a General MIDI compatible set of instruments. Hopefully it's possible for you to try out a demo of them. Make sure you understand how to add and select a VSTi synth in Band-in-a-Box - Open the VST/DX window, and choose "Add VSTi Plugin" from the top plugin drop-down menu. VSTi synths that you've added like this will appear at the bottom of the list of plugins with the prefix <VSTi> (including the angled brackets).

Andrew
PG Music Inc.