At work we use an ms-dos based proggie, but it suddeny stopped working. The guy that was on shift when it happened says he was DL'ing crap from Limewire when some pron pop-ups came up. He closed them and then the computer froze. That's when the proggie wouldn't function anymore. It gives us an error stating that: "tq\tq.exe c:\windows\system32\autoexec.nt. The system file is not suitable for running MS-DOS and Microsoft Windows applications. Choose 'Close' to terminate the application." Any ideas?