Thanks for the reply. Unfortunately, I have already tried this see my last posting. Maybe you didn't understand when I wrote "Neither work when set as preferred."
Just to confirm the Sidewider works a treat with Xwing but the CYBORG does not.
Also, before the last attempt of installing XvT, I set "Setup.exe" Compatablity to Windows 95. It was only after doing this that I was able to instal XvT.