Changed ISP and can't connect with SBS 2003/ISA 2004

I've changed ISPs and I can't connect to the Internet.  I have SBS 2003 and that's my Domain Controller.  I also have ISA Server 2004.  I have changed the external NIC address and changed the Forwarders in DNS.  I still can't access the internet. Is there something I'm missing?
ETI2010Asked:
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delmcConnect With a Mentor Commented:
Have you re-run the Internet and email connection wizard and changed the ISP details on one of the first pages. I always use the built in tools as it effectively changes the network for you and all associated services such as DNS and DHCP accordingly.
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delmcCommented:
Take a backup of ISA server by exporting the entire ISA configuration to file and then run the wizard, as it will reset any customised rules you have created, you will then be able to restore the ISA configuration.
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crash2000Commented:
I presume you have changed any ISP login details on your Router?

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