So I made a new copy of the Emptyproject sample that comes with the April 2007 SDK, and I made a little program with it. It runs fine on my computer, but when I sent it to a friend's it gave the error message "Failed to created device" when it starts up. I added in a little system to write out a log file, which showed that DXUT never called any of my callback functions but rather it failed during DXUTCreateDevice, so I think that the error occurred somewhere in DXUT. My friend has a GeForce 6800 and says that he has the latest version of DirectX. Any suggestions? Also, I tried another project based off of Emptyproject but that didn't work either.