[newbie] nvidia dir?

[Steve Hammond]

I'm trying to upgrade my nvidia display driver (http://www.linuxgames.com/), 
and am misunderstanding the supposed directories: most instructions include 
the following command

$ cd NVIDIA_kernel....

but on my comp that directory doesn't exist.  What am I missing? If I have 
to create a new folder I would like your suggestions on where to put it, but 
I would think it's in there somewhere already if my vcard already works.  If 
it helps, I've got my vcard settings from hardrake listed below.

Thanks,
-stv
Vendor: \x{200E}NVidia
Bus: \x{200E}PCI
Bus identification: \x{200E}10de:281
Location on the bus: \x{200E}1:0:0
Description: \x{200E}GeForce4 Ti 4200 with AGP8X
Module: \x{200E}Card:NVIDIA GeForce4 (generic)
Media class: \x{200E}DISPLAY_VGA
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