At the moment we have got the following config:
1. NetWare 6.5 DNS, DHCP, DNS Zone abc.de
2. XP PCs with Novell DNS 192.168.1.1 and member of abc.de ad domain
3. Active directory with the domain name abc.de and no DNS or DHCP

Whats the best way to use active directory and edirectory with dhcp dns?

I think we need a Windows DNS and DHCP to get the optimal windows domain
integration. Are there other ways (better)?

Thanks...