I tried to download a pdf file and got error

x c:\ doc and settings\----\local settings\ temp internet files\local settings\--.pdf

The application failed to start because the application...

when i try to boot i get the message 'windows\system32\config\system missing or corrupt'

I tried to repair as advised usind the cd- rom. But still get the error message and advise to use the cd.
...

my OS is xp pro

cannot boot because system 32 Missing or currupt

I have downloaded the six startup diskets and loaded them on the defective computer

I now get the choices

To start...

I got the system 32 error.
Tried to use repair console but still get system 32 error when i put in the boot cd.

use of F2 or Del did not make any difference- still get system 32 error

tried cd...

When i put in the cd the drive is laboring bt i still get the message windows fail--