It is so amazing that nVidia creates those drivers this way. It took me some time to find how it is done … and here it goes:
Record an answer file first by going:
setup.exe -r -f1C:\nvidia.issand do a install with all the options you want.
then save the answer file and you can silently install every time thereafter with:
setup.exe -s -f1C:\PATHTO.ISS
Found here