Modify default external ip adress in ISA 2006

We have been decommissioning an old firewall, and this has worked well except for one glitch.  Some external services that we use, like the old firewalls default external IP address (public ip address).  I have brought this ip address over to ISA 2006, but cannot find where I can tell ISA from now on this is your new default external ip address.

I have done some searching and see you cant have two default external ip addresses, I only want one - but i want to choose which one.

Can this be done,
thanks
kaitiaki0123Asked:
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Keith AlabasterConnect With a Mentor Enterprise ArchitectCommented:
not in ISA - is in the host OS of the server. Edit the tcpip ipv settings of the server.
Change the server ip address to the ip you want it to use for outbound traffic and add the current external ip address into the additional ip addresses section.

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Keith AlabasterEnterprise ArchitectCommented:
The ip address assigned to the external nic in the normal entry place will be the ip address used for outgoing NAT.
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kaitiaki0123Author Commented:
Is that on the server or ISA itself? We have about 5 external ip addresses and the ip first ip address in the tcp/ip settings isn't even the public address of ISA, it's the second one down under advanced.
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Keith AlabasterEnterprise ArchitectCommented:
Then change it round :)  Yes, on the ISA itself. ISA will use the one on the main tcpip page of the nic.
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kaitiaki0123Author Commented:
Where on ISA do I change this?
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kaitiaki0123Author Commented:
I beleive that ISA just cannot do what I asked, and the only way to make the changes is via the OS
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