Brain Fart:
Are you making a single OS boot disk? If so the dat file is inside the bin file. We use the dat file to emulate (sort of) a bin file. For a single boot 2000 CD use the instructions provided here at
http://www.thetechguide.com/win2kbootcd/. Just swap out the parts about Pro for Datacenter. The boot sector is the same for all versions of 2000.
In other words, the dat file is only needed for a multiboot cd. You may still need to use the dat file if you can\'t get the boot.bin file supplied to work. Just remember to that if you use a dat file you still need to load some other bin file to make it bootable.
Did that make sense?
boot.bin for single boot
-or-
xxxx.dat as a pointer when using a multiboot loader like the one supplied at my site and also found at Bart\'s site.