I apologise now if I don't supply enough information but I only know the basics of networking so hopefully you can still answer my question. If a network was set up with 10 computers and a server and the 10 computers were named 1, 2, 3 etc., and then computer '1' was taken off the network. At a later date you could add a new computer and reuse '1' as the name and the original password. That much I know how to do. What if you didn't want to use '1' and decided to add '11' and a new password? Is there a way to change '1' to '11' or would I have to delete '1' in order to create '11'? The 10 computers are either using Windows 2000, XP or VISTA. The server is using Microsoft Windows Server 2003. I hope that you will be able to help me with this, I have tried searching for help but haven't found anything that answers my questions (maybe I am not asking the right question for a good search, I don't know). Thanking you in advance.

"At a later date you could add a new computer and reuse '1' as the name and the original password. That much I know how to do.". Not exactly. A computer account and a user account are completely different. Passwords have nothing to do with computer/netbios names. If you're running a Domain, then you won't be able to authenticate a newly added computer with the name "1" until the old computer account is removed from AD. What you need to do in that case, is delete computer 1 from the Active Directory computers list. Then, name the other computer "1" or "11" (or whatever you want it to be), and add the client to the Domain. If you're not running a Domain, then just naming the computer "11" is sufficient, and you won't need to do anything with the "1" that no longer exists. "So won’t you give this man his wings What a shame To have to beg you to see We’re not all the same What a shame" - Shinedown

Currently when I replace a computer on the domain I have to reuse the same user name and password or I can't get onto the network. Are there a limited number of users? Maybe that is why I have to reuse user names? Most of the names are now redundant (as the user names are peoples names that no longer use the network) and I would like to delete them and add the new user names. Any suggestions? Thanks