Seems to be an epidemic lately....
This can be caused by a trojan.
Get rid of the trojan.
Update your antivirus software and run a full system scan.
Copy the autoexec.nt file from C:\Windows\Repair to C:\Windows\System32
And set Attributes for autoexec.nt to Read-only.
Or %systemroot%\Repair to %systemroot%\System32
Read-only
[[Specifies whether this file is read-only, which means that it cannot be
changed or accidentally deleted.]]
1. Right click the file.
2. Properties.
3. Select: Read-only.
4. Click: Apply.
5. Click: OK.
16-bit MS-DOS Subsystem error while installing or running a DOS application
http://windowsxp.mvps.org/16bit.htm
MS-DOS or 16-bit Windows-based program Error Message
http://www.kellys-korner-xp.com/xp_m.htm#16bit
Error message when you install or start an MS-DOS or 16-bit Windows-based
program
http://support.microsoft.com/default.aspx?scid=kb;en-us;324767
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Hope this helps. Let us know.
Wes
MS-MVP Windows Shell/User
In