WAaaaaaaaa-16 bit Windows Subsystem

Whenever I try to run C program on My Xp Pro,I get
"
D:\WINDOWS\SYSTEM32\AUTOEXEC.NT.The System file is not suitable for running MS-DOS and Microsoft Windows applications.Choose 'Close'to terminate the application
"
THIS ERROR.
This also happens when i try to open self extracting archive.

Also The wowexec.exe is not running on the Task Bar


Plz Help!!!!!
Thus I Yelp!!!!! Thanks