I accidentally deleted NTLDR before the evening, depressed.
......
Depressed procedure is never written, because of the business trip, the machine is urgent, and there is always a depressed.
Today, I finally solved the problem.
step:
1. Do a boot disk, you can format the floppy disk directly under XP
2. Enter a command to the NTLDR under Win2k on the command.
Attrib NTLDR -S -H -R -A
3. Then copy it to the floppy disk, then copy to my machine C