Do I have to deploy Active Directory on Windows Server 2003 ?

Q1. We are a Novell shop with NDS. We don’t use domains much in our Windows servers. Do I have the option of NOT using Active Directory ?

Q2. From what I’ve read it seems that deploying Active Directory would be beneficial. I don’t want to compete with NDS… but it would be nice to leverage it… Can I use Active Directory to take advantage of our existing Novell NDS ?

Q3. From what I’ve heard….Active Directory need to make use of a DNS. Does this DNS have to be on the Windows 2003 Server or can I simply reference it ?

Thanks.

Regards,
Pierre