>Hi Antonio,
>Thanks for replied,
>* 1- You did not install the server as a PDC (primary domain controller). This is a choice you need to make during installation.
>I did this.
>
>* 2- Your network adapter is not working. Check event viewer under administrative tools for possible error messages.
>I've Checked on this too..
>
>* 3- Your connection to the network fails. Check cables, hubs and protocols.
>ditto
>
>* 4- You are not logging into the correct domain (the domain where the PDC is located).
>I'm not sure about this, but I just have only 1 domain.

Actually, you always have at least two, the local machine accounts, and the NT domain. The local and domain admin accouns may not have equivalnet privileges on any given machine, dpending on how they were defined.

>
>* 5- Your user account does not have permission to enter the domain. Are you logging as administrator ?
>I logged as administrator. I think administator can do anything on the server, isn't it ? (this is a true question, as I'm really a newbie on this NT OS)
>

The local Administrator and the domain's Administrator account are not identical; if you want the Domain Admin account to have local privileges or the reverse, you have to assign the privileges to the accounts.

>* I suggest you to check all these issues and if you still got problems, reinstall the NOS and do not apply Service Pack 4 until you are sure you can enter the domain.
>I'm going to try this, even without NT SP4 the OS won't recognize my display adapter.
>
>
>
>Thanks.