Installing GeForce on Inspiron 2650(RedHat)
 

it took me a while to figure it out but

1-)download nchooser.sh file and run it it will list driver to donwload
2-)after downloading driver from www.nvidia.com
3-)read readme file and to as it said
4-)enter bios and change screen to only lcd this will fix the flickiring problem after shuting down X.

thx to all people on this forum to help me figure this out.