Dns take local ip

[miza]

I have setup ispcp panel on a Debian lenny
I have set fqdn: lame.lamezor.gr
At the system network ip i pressed enter to take the default(local:192.168.1.146)
At panel domain set: admin.lamezor.gr

I go in the my provider's dns panel and set ns1.lamezor.gr, ns2.lamezor.gr to my external ip. When i after some hours tried to dig lamezor.gr i saw that the domain lamezor has taken my local ip ,not the exteral..
What can i do to resolve this?

P.S: i tried to set at system network ip my external but then i cant access the panel.