.rpg and Mandrake

[Timothy Domst]

I have an older Nvidia card that had the proprietary 3d driver on their 
website only, not the Mandrake install disks.  I got the .rpg files on 
my desktop after I got them from the site, and just clicked on them and 
they expanded and installed.  The computer didn't seem to have to look 
to find the rest of the card's drivers in the filesystem.  Is this 
because Linux has a rigid filesystem that can't be changed so 
everything can be found by the system, and therefore no search was 
needed?  Or are they just in my Usr folder somewhere?

I also have a question about shutting down.  I tried shutdown -h from 
the terminal and it didn't work.  Am I getting the syntax wrong?