Hi, What exactly needs to be done when you want to replace a domain controller with a new server. Active Directory and Global Catalog needs to be copied to the new server.

Microsoft hightly recommends two DCs minimum. If this is the only one consider adding a second and not using it as a replacement. Otherwise you add the new server as a DC, setup dns, set as GC holder, xfer the fsmo roles and you are done. Give a person a fish, they eat for a day. Suggest they internet search and they learn a skill for a lifetime.

Don't forget to demote the old DC if it's being decommissioned. TECH-NO-LOGICAL ROMANCE! http://www.homestarrunner.com/tgs12.html

Is it possible to make the new server primary DC and make the old server secondary DC. What about DNS and DHCP, this was all on the old server, but I want to make the new one DNS and DHCP server. Do I just need to install it on the new server and de-install it on the old one, or do I need to transfer something?

"Is it possible to make the new server primary DC and make the old server secondary DC." There isn't any notion of a primary or secondary DC in Active Directory aside from FSMO role holders. AD is multimaster. "What about DNS and DHCP, this was all on the old server, but I want to make the new one DNS and DHCP server. Do I just need to install it on the new server and de-install it on the old one, or do I need to transfer something?" You need to get a book or hire a consultant. It doesn't sound like you have any idea how to add in this new machine, nor did you seem to know you should have two DC's from the get go. You're more than likely going to miss things to ask and do something very wrong. "Enough, enough bowing down to disillusion! Hats off & applause to rogues & evolution! The ripple effect is too good not to mention. If you’re not affected, you’re not paying attention!"