Ruari I'm already in the UK so I could probably throw it down the street to you.
But sadly (for you), I finally got the blasted thing working. By a combination of waiting for the wind to blow the right way, making sacrifices to Dark Gods, uninstalling / reinstalling drivers several times, and the Virus OS once, powering up/down while holding different buttons whilst dancing around a dead chicken, and randomly replugging USB devices while cursing the inventor of it and laughing at the "Universal" in the name, somehow, Ableton does indeed now "see" it - Marc.
I now get, as expected, Virus TI Synth and Virus TI MIDI showing up correctly in Ableton's midi preferences. I also get those 2 as routing choices on each clip or track strip, which is what I had previously under the old TI OS.
Things that might have made a difference: reinstalling the TI OS (takes FOREVER, and opening up Firefox to look at the internet while waiting, or doing anything at all, even moving the mouse, caused the OS update to fail... took me 3 times to learn that) / trying my millions of USB devices in different plugs (mouse, keyboard, TI, that's all! ffs) / uninstalling, rebooting, reinstalling the driver and using a different USB port for 2nd step of installation, etc etc.
One odd error that cropped up once was that Windows 7 complained that the Virus drivers were not correctly digitally signed. I think I successfully got it to ignore that though.