Hi all, Well I managed to get my main machine joined to the domain, (see DNS thread), I had to use the FQN to make it join, I also managed to get the machine Imaged, the server not validateing me during Ghost bootdisk process was caused by NetBIOS over TCP/IP being disabled on the server ????????. However I am still unable to see the other machines on the network from any of the machine and I have recieved the following message in the event viewer on the server: Source: Userenv Event ID 1000 Description: Windows cannot determine the user or computer name. Return value (1326). After a quick google I came across this, http://support.microsoft.com/default.aspx?scid=kb;en-us;329708 As you can see from the above document The resolution is easy, on a normal machine, but I am experienceing the problem on a DC, so does this mean that I am going to have to run DCPromo to make it a stand alone server then do what the above doc says then run DCPromo again and set it all up from scratch or will the settings be retained when I run DCPromo the first time????