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I keep forgetting to add things...<br />
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If no DHCP Server is present (and the Network Connection is active) then an Address from the Automatic Range is assigned:<br />
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This is a Class C Subnet (/16) with Addresses in the Range 169.254.0.0 to 169.254.255.255.
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I keep forgetting to add things...

If no DHCP Server is present (and the Network Connection is active) then an Address from the Automatic Range is assigned:

This is a Class C Subnet (/16) with Addresses in the Range 169.254.0.0 to 169.254.255.255.

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Is the automatically assigned 169.254 range also non routable?
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Is the automatically assigned 169.254 range also non routable?

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Although non-routable is a bad description, all IP ranges are routable, just some aren't used in the public IP space ;)
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Although non-routable is a bad description, all IP ranges are routable, just some aren't used in the public IP space ;)

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I am setting up a 2003 server network at school. &nbsp;Is there some reason why I should be using the 192.168... range instead of the 10.0.0.x range? &nbsp;When the DHCP server suddenly stops functioning, then the 192.168.x.x range is automatically adopted by each PC. Understood. &nbsp;Is this the reason why I see so little reference to and use of the 10.0.0.x range? &nbsp;
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I am setting up a 2003 server network at school.  Is there some reason why I should be using the 192.168... range instead of the 10.0.0.x range?  When the DHCP server suddenly stops functioning, then the 192.168.x.x range is automatically adopted by each PC. Understood.  Is this the reason why I see so little reference to and use of the 10.0.0.x range?  

10.0.0.x or 192.168.0.x non-routable network - which should I use?

Windows Server 2003 was based on Windows XP and was released in four editions: Web, Standard, Enterprise and Datacenter. It also had derivative versions for clusters, storage and Microsoft’s Small Business Server. Important upgrades included integrating Internet Information Services (IIS), improvements to Active Directory (AD) and Group Policy (GP), and the migration to Automated System Recovery (ASR).