Error installing video card

[Chrisk1152]

I have a SLI linked Geforce 9800 GT video card and I downloaded the drivers for it (Linux x64) When I goto run it I get a message:

ERROR: nvidia-installer must be run as root


How can I do this? I have searched the forums and online docs for how to run something in root but have found nothing.

[IcarusR]

Type 'sudo' before the command & enter your own user password when asked for it.

Something like this...

andy@Florence:~$ sudo fdisk -l
[sudo] password for andy: 

Disk /dev/sda: 1000.2 GB, 1000203837440 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x0001243f