Are you using Windows Authentication?

>Hi,
>We currently have SQL Server 2000 installed on a Windows 2000 sever machine. In the next couple of weeks we will be moving this and the rest of our servers to an Active Directory 2003 domain.
>
>Can anyone enlighten us as to any gotcha's or things we need to be aware of? Will we need to reconfigure the SQL Server after the migration?
>
>Any help is greatly appreciated.
>
>Thanks in advance
>Bill