Thanks for pointing out the ActiveX control. I don't use IE unless I have to so it would have taken a long time for me to find that.
That said, I just installed the ActiveX component on IE6 here at work. The motion image has has all sorts of weird color banding and then IE crashes after 5 or 10 seconds. But I could use the wheel to scroll the image before it crashed

I'm not too worried as it may well have to do with how the network is locked down here. And, as I said, there's nothing to zoom in on anyway.