That will depend on what you mean by "boot floppy". Windows "format" will
indeed create a bootable floppy, but it is in no way a "boot floppy". So
what's the difference?
A bootable floppy may boot to anything --- some rare form of DOS, 9x, or ME.
A boot floppy boots to a stripped down version of your primary OS, in this
case 2000, XP, or Server 2003. A boot floppy will permit you to access NTFS
partitions whereas a bootable floppy will only allow you to access FATxx
partitions. With one you can only play with the floppy, but with the other
you have command line access to the entire system. 2000 is the last Windows
OS that I know of that allowed you to create boot floppies.