I am running a Virtual box with the 8400GS and Mavericks. I am stuck in 1024 ( ie no video support). I tried arch=i386->=32 , GraphicsEnabler and other boot options, but I can't get it to start supported. Other resolutions would be nice. The kext wizard is not on this version. I think that one is needed for this card. I could not find any drivers on the Nvidia site.