The Tech Q & A is the right place and there you will get auto generated notices every time someone responds and you'll also earn Tech points when you close off the question. So next time you have a question ask it there as you'll get a much faster response and generally someone in your time zone will be able to help you out. Remember TR is world wide so the discussion forums are really a slow way to get a response.
But in answer to your question what you have to do is set 2003 to Mixed mode to migrate from a NT 4 box across as there are different protocols involved hence the error message you are receiving. This issue was addressed at the MS release of 2003 and is be available on the MS Knowledge base.
Try these URLs
http://www.microsoft.com/technet/community/chats/trans/windowsnet/wnet0414.mspx
http://www.microsoft.com/seminar/shared/asp/view.asp?url=/Seminar/en/20030324TNT1-74/manifest.xml
http://www.microsoft.com/seminar/shared/asp/view.asp?url=/Seminar/en/20030424vcon15/manifest.xml
http://www.microsoft.com/business/insights/content/article.aspx?contentId=692
http://www.microsoft.com/technet/community/events/windows2003srv/default.mspx
I don't know if any of the above will cover exactly what you need as I've just plucked them out of a list of URLs relating to Migrating from NT4 to 2003 ES.
If none of them are of any assistance you should repost the question to the Tech Q & A there is a guy called The Chas who should be more than able to help you out.
Cheers
Col ]:)
