you would find installing the package hard, mostly as the DVD is read only,

start it in normal mode. to access the fat partition, just klick on the desktop icon, when the filebrowser has opened you rightclick on the disktop icon and either under actions or directly under the menu you get you have change read write mode.

if you still want to get acess to it under cli, just type
Code:
mount -a
then
Code:
sudo remount -rw /mnt/partition-name
the partition name can be found with
Code:
fdisk -l
minor L not capital i, there you should see something like

Code:
Disk /dev/hda: 80.0 GB, xxxxxxxxxxx  bytes
yyy heads, zz sectors/track, nnnn cylinders
Units = cylinders of xxxxx * 512 = 8225280 bytes

Device      Boot      Start         End      Blocks    Id  System
/dev/hda1               0           0           00000     83  NTFS
/dev/hda2               0           0       0000000+  83  FAT
just use the /dev/ that ends in fat.
to get the file, write
Code:
wget http://us.download.nvidia.com/XFree8...-9746-pkg1.run
that should get you the latest Nvidia for linux.
have fun