I spent several hours yesterday downloading & setting up Glidos and Total Game Control device controller to get TR1 and TR Gold working on my Windows XP machine. It was working fine until a Windows Upgrade installed itself and now when I try to run Glidos, I get the error message

Glidos
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.

Any help would be much appreciated.