virtualbox.org

I am running Windows XP within Windows 7, because Nero Liquid TV does not support 7.
The TV Tuner card is plugged into a USB port, but when I try to access it I just get an error.

I have no idea what this means. Anybody know what is going wrong?

Proposal or idea:
http://forums.virtualbox.org/viewtopic.php?f=2&t=37326