Isa server 2000

Hi,

I have a ISA ser 2000, which previous configuration was a nic with a internal ip adress range and a dialup connection, and thus via the dialup we were accessing the internet.
Now I have installed a second nic with a public ip, but still I am noticing that the isa server is using the dialup entry to access the internet.
I have already disabled the option "use dialup entry as primary route"
What else is there to do so the isa server will use the nic and not the dialup entry to access the internet.

Many Thanks.

Leopold