I have a machine running Vista Ultimate, and I would like to get my ATI TV Wonder VE working for video capture and TV tuning. There is no official support for this configuration. Has anyone successfully hacked a driver together to get this working? If I can't get this up soon, I'm just going to by a DTV tuner card and stick this VE in one of my slower machines.

You should really spend some time reading up on that tuner, im pretty sure they have a vista driver support, even if not, you should try to run it in the computer, if no luck then I would suggest doing your pick of buying the DTV tuner card.