This is a cross-post from the CUDA 2.0b2 thread–just wanted to make sure everyone has seen it.
If you’re unable to install 177.35 due to a “no supported devices found” error, download the new driver. This will be all cards except the GTX 280 and GTX 260. If you have a GTX 280 or GTX 260, you do not need to download this update; it only adds support for other cards.
Remember, this is a beta driver intended for CUDA development only.