What is the meaning of this massage?

[qwerty]

I have WIN XP PRO SP1,SP2
Sometimes when I try to install some little programs
I get the massage called: "16 bit Windows Subsystem" the massage says:
"C:\windows\system32\autoexec.nt. The subsystem file is not suitable for running MS-DOS and Microsoft Windows applications. Choose 'Close' to terminate the aplication."

And there are two buttons: "Close" and "Ignore"

When I push "Ignor" the installation terminates.

I checked and the file doesn't exist in this directory.

What is the meaning of this massage and how I get read of it?

Thanks ahead.

 

[BlaBli]

ms dos is usually called 16 bit applications.
the new window, 2000 and xp are 32 bit based OS.
thus... if u try to install old app on a new version of window then u will get this message.

 

[Lorand]

Try this: http://support.microsoft.com/default.aspx?scid=kb;en-us;324767