SBS 2003 installation problems

I'm having trouble sucessfully installing SBS 2003 and am getting different error messages or errors each time I reinstall.  I've done a clean load 3 times now.  I have a new HP ML330 with two SCSII drives running raid 1.  I've used Smart Start each time and the drives seem OK.  I can partition the drives and save files etc.  So that seems fine.  

What my problem seems to be is in DNS or something like that.  I don't remember the first error, but it said something to do with DNS.  I went past it and couldn't come back to see the error.  I tried a fresh install again from Smart Start and this time it said Share Point Services failed to load.  The installation finished and I was able to connect to the MS update site, but nothing else on the web.  

The server is behind a Cisco Pix firewall with port forwarding.  I used as the server IP (one NIC only).  I used the ISP DNS addresses as the prefered DNS server and as default gateway.  Is this not right?  Does anyone have any ideas?  Am I missing something obvious?
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You need to set the default gateway to what ever the PIX IP address is.
You cannot set the default gateway to be the same as the server ip address.
The default gateway tells the computer where to access the internet.
Jweaver57Author Commented:
Oops I miss typed, the default gateway is  I checked the TCP\IP properties and the DNS was set to, with no secondary.  I changed this to the ISP DNS and it seemed to work just fine.  But  share point services still did not install.  Now I reinstalled the OS, so hopefully this time everything works.  
Is DNS enabled on the Server? You can set the DNS servers to your own IP Address as long as DNS is running on the Server and you set the forwarders.

Here is a step by step guide to setting it up.

I would setup DNS with forwarders.  And then change your DNS on the TCP/IP properties to your servers ip address.  I would also setup DHCP for your workstations.

Here is an article on that.

Good Luck!
Jweaver57Author Commented:
Well apparently there was more wrong than I realized.  I learned that I had a bad 3rd CD which prevented correct installation.  I re-installed with a new CD and all seemed to go OK.  
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Windows Server 2003

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