usb video coder not attaching w7

[jldg]

I see and read a lot of topic on usb.., and try a lot without any success...
I dont find any clear explanation from developpment team..
I have the problem with an usb video encoder (dazzle vc 170)
host is win7 64b and guest is xp sp3 32b
I dont have amd processor but intel i5.
I try with generic and specific usb filter, usb2, EHCI or not, and all sequencing order of plug and unplug of vc170..
always same message: "busy with another request, try later.."
in hardware manager of win7 dvc 170 appear with a yellow triangle (no pilot)
and virtualboxusb appear in usb controler
as somebody a solution?

on another machine , i try virtualpc, and can use dazzle 170 with pinnacle video studio 10.7 in guest OS
but other problem, no sound in video studio ( sound is ok in other programs...)
in hardware manager of win7 dvc 170 appear with a yellow triangle (no pilot)
and a new component appear: virtualization usb

thank you for help...

[stefan.becker]

Let it be, let it be, ....

Else if it would work, it makes no sense. You get at a maximum 30 % of host performance.

Start the pc with the required os native.