Unable to install game

[Kev xD]

I've Windows XP and am unable to install Worms Armageddon. After accepting license agreement, I get the error message

C:\WINDOWS\SYSTEM\AUTOEXEC.NT. The system file is not suitable for running MS-DOS and microsoft windows applications. Choose 'Close' to terminate the application.

I've downloaded and installed updates but hasn't had any effect

[Muzer]

your Start Menu click "Run...", type "cmd" and click OK. In the black prompt box that pops up, type:
copy c:\windows\repair\autoexec.nt c:\windows\system32

If this doesn't work, you can perform the same task manually. Navigate to
c:\windows\repair\

and copy the file "autoexec.nt" to your clipboard. Then navigate to
c:\windows\system32

and paste the file there.
. .