Thank you for your responses. I was reading your document and I have a question about Answer #3. How do I know if I am running the kxrpc service? I have Win9X machines on the network, but my Win2k or WinNT machines are not running this service under services. I guess I only need to replace the files to the Domain Controllers and will finish the upgrade. Right?

Answer 3: can I easily upgrade our servers?

An upgrade of your server can easily be done. For the Windows 9x users we advise
you to upgrade the kxrpc service at the same time as you are upgrading
your other kixtart files.