Re: UPDATED!! Howto get NVidia driver installed on Solaris10
xorgconfig should be installed by default, at least with a standard Solaris or Solaris Express release. I think some of the OpenSolaris CDs may not install it.
Do you have graphics running at all on your system?
Can you login in to a command prompt and use "kdmconfig" to choose between the Xsun and Xorg Xwindows systems? (You need to choose Xorg to use the Nvidia driver.)
Do you have Xwindows running using the generic "nv" driver?