I actually solved the problem by listening to someone else on the net. I uninstalled the entire USB Hub and my USB/MIDI Drivers for my synths. I then restarted. The system reinstalled the USB Hub automatically (have the chipset drivers handy just in case the system doesn't install them and you...
I have had this same exact problem with both of my Yamaha keyboards. They both worked fine on Vista but as soon as I changed to Win 7 64 bit I can't get them to work. There is some kind of USB/MIDI bug in Win 7. My apps recognize my keyboards but there is no data transmitted in either direction.