Missing or Corrupt File in Win XP Pro

Unable to start Windows XP Professional due to missing or corrupt C:\windows\system32config\system or c:\windows\system32\config\system.log.

Unable to start into safe mode, debugging or any of the mode in Windows Advanced Option Menu.

How can I create such boot disk so that I can replace file(s) in command prompt mode?

Any better solution other than re-format it?

John Powell
Computer Excel
computer_excel@hotmail.com