boot problem with nt

i have WINDOWS NT SERVER INSTALLED ON MY PC .
TODAY WHEN I STARTED MY PC I GOT AN ERROR MESSAGE AS”WINDOWN NT COULD NOT START BECAUSE THE FOLL.FILE IS MISSING OR CORRUPT.
\WINNT\SYSTEM32\CONFIG\SYSTEM HARDWARE PROFILE\LAST KNOWN GOOD MENU”.
I DONT HAVE A EMERGENCY REPAIR DISK.I INSTALLED WINDOWS NT IN ANOTHER DIRECTORY(WINDNT).IT IS BOOTING THROUGH THIS DIRECTORY BUT NOT THROUGH ORIGINAL WINNT DIR.WHAT TO DO?I HAVE SOME VERY IMPORTANT PROGRAMS LOADED.I WANT TO RETAIN THOSE PROGS.