Upgrade question

in A+
I've visited several sites and still don't have a definite answer. When upgrading from Windows 1998 to Windows 2000 which command should be used?
I've seen WINNT.EXE and WINNT32.EXE
I've seen WINNT.EXE and WINNT32.EXE
Comments
The answer should be WINNT32.EXE
Winnt.exe is for installing from dos/boot floppy.
Good luck with the studying!