As of this writing; I have installed the BCA2000 using my Win-7 32 (driver V2.1.0.6) with no problem and have worked on a number of record/edit sessions.
Do not connect to USB before the install but during install, it will ask you to plug into the USB port.
If you did make a connection before the install, uninstall the complete software then with the unit still connected, go to 'Device Manager' and delete the driver. Now disconnect the USB and re-install.