Yep, edit /etc/modules.conf and add an alias that loads NVdriver for you when the kernel gets a request that it'd handle.
First, though, run one of these:
[ -c /dev/.devfsd ] && echo "devfs"
If it prints out "devfs", then add a line like this to modules.conf:
alias /dev/nvidia* NVdriver
If it printed out nothing, then add a line like this:
alias char-major-195 NVdriver