winnt/system32 problems

I have no operating system disc for my dell computer is it possible to obtain one???
or is it possible to repair this problem ???
windows 2000 could not start because the following file is missing or corrupt /winnt/system32/config/systemced/ start up options for windows 2000 press F-8 you can attempt to repair this file by starting windows 2000 set-up using the original set-up floppy disc or cd-rom select ” r ” at the first screen to start repair
I HAVE NO DISC