When trying to install certain programs/games such as C++, MSDN library, or even the original Half-Life(oddly HL2 installed WITHOUT any problems),I keep GETTING the same error MESSAGE. The error reads as follwed: config.nt. The system file is not suitable for running MS-DOS and Microsoft Windows applications. CHOOSE 'Close" to terminate the application.
I tried going into the properties for the programs and changing the compatabilty,but it did nothing. Any suggestionse?Copy all the files to a temp directory and RUN the setup in compatability mode.http://www.softpedia.com/get/Tweak/System-Tweak/16-bit-MS-DOS-Subsystem-Error-Quick-Fix.shtmlTo fix run the following from the command prompt:

copy c:\windows\repair\config.nt c:\windows\system32

After you copy the file, find it in Windows Explorer, click properties and lock it down by giving it a read-only attribute.  

This also works for autoexec.nt

Hope this helps.  Thanks for the help guys, this little error has cost me valuable time from learning how to develop games Merlin, I tried your DL but it didn't help...anything else I'm supposed to do once I installed it? I'll try sidewinder's advice and reply back if it works.Hey Sidewinder, which file do I lockdown after I copy it? The one in the repair folder or in system 32?Waylon:

Please try to reproduce the error and leave a post with the exact error message.

A couple of Microsoft KB articles that might help:

http://support.microsoft.com/kb/314106/EN-US/

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

I posted the exact error in my first post, but here it is again. "config.nt. The system file is not suitable for running MS-DOS and Microsoft Windows applications. Choose 'Close" to terminate the application. "Out of the million fixes provided you choose to answer a question?