Go to http://xtiming.sourceforge.net/cgi-bin/xtiming.pl
. Then enter the monitor specs and your desire resolution at a desire refresh rate. Then copy and paste the modeline in the monitor section of either /etc/X11/XF86Config, /etc/X11/XF86Config-4, or /etc/X11/xorg.conf. Next if you are in runlevel 5 or 4, hit CTL+ALT+BKSPC or just exit out of X Window Server when running in runlevel 3. The first modeline for each resolution will be used first. If the first one is not correct, it will go to the next modeline.
No, the refresh rate and resolution is not dependent on the module (driver). It is dependent on the hardware by the RAMDAC. Though check the maximum settings you can use in the nVidia's readme file for Linux.