Hi, I need some advices with this problem. I have a domain and an old box with Win NT 4.0 on it. I would like to replace the old box with a new one and install win 2003 server... My question is to somebody to already did this and any advice will be more than helpfull... Thank YOU

Refer to this link. The section"Upgrade to a single domain forest" should help. http://technet2.microsoft.com/windowsserver/en/library/9af37123-fdfc-44b5-a8f4-c322cc772c0d1033.mspx?mfr=true