[Users] USB dongle (sigh...)

Hi, A user of mine is trying to ruin oVirt's reputation by asking me how will I handle the USB dongle issue. I found nothing like USB passthrough drivers, and I don't intend to use such a bad solution. Is there anyone here who faced such a request? I saw http://www.dongleservice.com/ and http://www.digi.com/products/usb/anywhereusb, but I was wondering if anything lighter would exist (based on some dd if=/dev/goodOldLinuxTrickWeLove things...) The VM is a XP or 2003, and I already tried dd /dev/myUsbDevice of=dongle.iso, then mount it in the VM with daemon tool. The iso is mounting, but the content does not appear. Anyway, I'm not sure at all this will be enough emulation to convince the doubtful software *this* is its dongle. Regards, -- Nicolas Ecarnot