Built a VM from the SP3 slipstream disk, but it failed twice; tried another from an OEM disk, but this could not be activated. I think the slipstream disk is broken, but Greg is going to build me a VMWare image from another one, and then I'll unroll the backup of my old machine into it. That's pretty much my last hope; failing that, I think I'll have to keep the old machine around to do Windows programming, or try VMWare (which I don't like, and which costs money).