How to fix this problem ?

[Damien.]

Starting windows up on one of the work computers and it says;

Windows cannot startup, this following file is missing or corrupt.
C:\windows\system32\config\system

How to i fix this, the only option i have from booting from the install disc is to go into the recovery console.

Help please !

Its windows XP pro.

 

[Damien.]

Ive run the CHKDSK, it says the HDD appears to be fine.

EDIT: tell a lie, it says CHKDSK has found one or more errors !?