I too am having difficulty in getting any IBUS activity.
I'm not sure if my Resler Interface has installed on the computer ok?
I am running on Vista Premium, I connected the Interface, the USB was detected and then it said was downloading drivers and hardware which it did and then said it was ready to use.
So I tried and kept getting time out messages off Navcoder, is it worth downloading from here?
http://www.ftdichip.com/Drivers/VCP.htm