ATI HDTV Wonder Reviews at Tom's Hardware Guide:
http://graphics.tomshardware.com/vi...0917/index.html
http://graphics.tomshardware.com/vi...17/hdtv-04.html
Nvidia Compatibility

While ATi states that the HDTV Wonder will work with any DirectX 9.0 video card with at least 64 MB of memory, we could not get it to work with the two Nvidia cards we used. The software installation would appear to go through cleanly, presenting us with the MultiMedia Center panel upon reboot. Then we clicked on the DTV application button, nothing would happen. No window, no drive access, nothing.

Running the PC Check with the Nvidia cards gave us useless information. On the GeForce 6800 card, all the checks came back as OK. On the GeForce Ti 4200 card, PC Check said that DirectX 9 had to be installed.

For two days, we reinstalled Windows XP and updated drivers. We Ghosted and re-Ghosted the boxes. We looked on other forums and dove into Google, but we kept coming up empty. The HDTV Wonder simply does not play nice with Nvidia video cards.


http://graphics.tomshardware.com/vi...html#conclusion
Conclusion

Not playing nice with Nvidia cards and the difficulty in installation takes away from a decent first try for ATi in the HDTV world. Millions of people own an Nvidia card and it doesn't make sense to sell a product that only works well with ATi cards.

If you are able to get through the installation and get a decent signal, the HDTV Wonder is an excellent product. The video quality is absolutely stunning and the recording features make saving video painless. If ATi is able to fix the compatibility issues and the installation madness, it will have a first-rate product with the HDTV Wonder.