Installation problems
Try as I might, I just don't seem to be able to install the D3D10 developer runtime and refrast on my machine...
I'm using Vista 5472 (the July CTP) and DX July 2006. Installation of the SDK seems to go OK (and yes, I checked that 'Developer Support' was turned on under the 'runtime' section) but all of the D3D10-only samples complain that they can't find a compatable D3D device, and the DX control panel won't let me change to the debug runtime.
Not really sure what to try... I'd be happy to install the refrast by hand, if someone would be willing to walk me through where the files should go and which registry entries need to be added to enable the device.

