I'm not entirely sure if you're asking about getting updates for Windows XP so that you can apply SP2, whether you're asking for updates to Microsoft Office without having an Internet connection, or both.

Fortunately, Microsoft is eager to have you receive all of the patches you may desire without you having to pay a dime!

Microsoft Office XP has three outstanding service packs, SP1, SP2 and, logically enough, SP3. You can order all three of them on a comprehensive CDROM by requesting it at Microsoft's Office Update Archive.

You should not need internet access to install any of these updates, with the possible exception of the updates for Outlook; however since you are not planning to use the Internet on this machine, then you should be able to skip these updates. You may want to consider not installing the Outlook components at all, since they deal mostly with internet security issues.

For Windows XP updates, order a Windows Update XP SP2 CDROM by going to SP2 Update CD Order.

You can also download all of Windows XP Service Pack 2 from Microsoft and burn it on a CD, then use that on your other machines, if you're motivated and have a reasonably fast connection. The full download version of SP2, which is 266 MB, can be found on the Microsoft site.

And now, a word from Dr. Fix It: Remember that updates are very important to conduct on a regular basis because security and stability issues are constantly cropping up with older software. Also, updates help to ensure compatibility with some newer hardware, for example by providing device drivers (files which tell the computer how to access a device) for the latest USB jumpdrive. Updates help to patch critical security holes that an attacker can exploit to take over your computer, although this issue is less relevant if the computer is not going to be hooked onto the network. Regardless, keeping your system up-to-date is a good habit and good practice.

Finally, if you want some step-by-step directions for installing the SP2 update to your copy of Windows XP, check out Upgrade to Windows XP SP2 safely.