Vista64 - Creative webcam !live (VF0220) problem

I have Vista Ultimate Edition (64bit) so I downloaded the 64-bit driver and
application software from Creative.

The webcam produces an image that includes part of the true image overlaid
with bands of flashing colours. It does this whether viewed through the
Creative cam center or the Yahoo Messenger application.

I have re-installed and re-installed this with anti-virus off and using "run
as administrator".

Any solutions?
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Regards, Colin