The "Windows Server Updates" you heard of would have probably been Windows Server Update Services (WSUS).If you have a number of clients that are not connected to the internet, but can talk to a server than is on the internet, this would be a great option.You will require a machine running a Windows Server OS, according to the system requirements you can go back as far as Windows Server 2003 (Windows 8 isn't a server OS so it won't work on there).I don't know if there are other requirements like DNS and Active Directory, and if any of that applies to your situation.XP has been around since 2001, which means that you've really had more than enough time to let it go.A number of businesses, not to mention governments, still rely on XP-based systems.The design makes sense, because they could be needed again someday.
The majority of businesses are still running Windows XP—but with Windows 7 now available, many companies are weighing the costs and benefits of upgrading from XP to Windows 7.
XP is a well-known commodity; it’s stable, but it has also grown a bit long in the tooth since its release back in 2001.
Windows 7 offers many enhancements over XP both from a usability perspective and in the areas of security and manageability.
This is a time-consuming and risky process that few users want to attempt.
The best way to move from XP to Windows 7 is to buy a new system with Windows 7 preinstalled.