You need to edit the file /etc/modutils/aliases as root and add an option for the module settings then once you save the file you need to run update-modules
to have the new information entered into the /etc/modules.conf to be available for use. An example of the line from my file.
# Added by me for Nvidia card
options nvidia NVreg_EnableAGPFW=1
You should put the both options on the one line separated by a space I believe and after you have updated the modules go to the console and stop the X server if using kde then you can do this by /etc/init.d/kdm stop
then rmmod nvidia
and modprobe nvidia
to remove and reload the nvidia module with the new settings. Then /etc/init.d/kdm restart
to get a new kde login screen while restarting the X server.