Ispconfig 3 + router

[planks]

Hello,
Firstly sorry if this has been discussed before on the forum, but I read and I still have not found an answer.
I have an Ubuntu 8.04 installation and i've installed ispconfig 3 .
The problem is that I have a router and I don't know what ip adress to use, since I make dmz, i can access the ispconfig control panel from outside my network but I still can't park domains .

My questions are :
1. Is there a problem that I use the same ip adress for ns1 and ns2 ?
2. What ip adress to use at System > Edit server IP and at System > Server config > my server > IP adress .

Thanks in advance and sorry for my bad english, I'm from Romania

[planks]

I think I will uninstall Ispconfig 3 and I will install v.2

[planks]

Solved, the same ip for nameservers is working and I used the local ip adress everywhere .