Set up DNS with No-IP DynDNS

Hello,
I would like to set up services for LAN (SMB, websites,...) and WAN (VPN, websites,...) users on our Mac OS X Leopard server. For cost saving reasons (non-profit associations), I do not have a static IP adress from my ISP, so I use free no-ip.com services (I could upgrade if needed). Let's assume the website name is "site.no-ip.org". The web server is up and running fine, and can be accessed both in the LAN and on the internet.
I have been searching the forums but no info on configuring a DNS server while using DDNS for the WAN. I also want users not to bother about their hosts file when connecting either the LAN or the WAN, so what should I assume for the domain name ? ("site.no-ip.org" for instance ? I am really sceptic about it).
Also, is it normal if the name of the server is something like "server.local", so the "DNS name" is referred to as server.local in the global settings of the server, but I have dc=site,dc=no-ip,dc=org in the LDAP tab of the Open Directory service (I use Open Directory)?
Related to the DNS issue, I am having troubles with the DHCP server: I thought that to configure best the VPN that assigns IP addresses within the tunnel, I should also configure the DHCP on the server. However, the config for DHCP needs information on DNS: should I mention the local DNS or the ISP DNS servers?
Since I plan to use iCal services as well, and probably Podcast Producer, I think I really need to configure the DNS server properly.
I am probably mixing things up, apologies for that, but I am a not experienced in this area.
Thanks in advance for any support and advice,
Mathieu

depends on the amount of cpu in "dumb" devices.

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Message Edited by bixfisher on 06-11-2009 08:24 AM

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