Need help finding the product key for Microsoft Office 2000

I have an old computer (and when I say old, I mean dinosaur) that was given to me by a friend. It has Windows XP with no service packs (imagine how much fun it is to use that ), but it also has Microsoft Office 2000 on it, and I wanted to find the product key for it. I found WinKeyFinder, but that only supports Office 2000 SP2, and I don't have the time to install SP2 (it currently has no service packs). Microsoft said they wouldn't be able to do it, so does anyone have any ideas on how I can find it? Or will I have to just install Office 2000 SP2?

There is the Belarc Advisor that may be able to display the Product Key but since Office 2000 support was discontinued some time ago the program may have also dropped the older things. Actually, Microsoft has dropped support for Windows XP and Office 2003 and earlier versions.
Belarc Advisor - Free Personal PC Audit, for software, hardware and security configuration information on your computer. Software license management, IT asset management, cyber security audits, and more.

Sorry, I'm not talking about XP SP2, I could do that easy. I mean Office 2000 SP2. And yes that would normally be just as easy as a Windows service pack. But it's not just installing it; it's getting it onto a disk, copying it to this old computer (it has no internet connection) and then installing it. And on top of all that, this old computer has a small hard drive with a bunch of junk I have to go through. I think it only has like 24MB left on it. By the way, this computer's hard drive is 12GB (yes, I'm serious) and it only has about 53MB of free space. Office 2000 is pretty much the only reason I'm still hanging onto this old thing.

So it's not like I can't ever install any service packs, there's just a lot that needs to be done before I can do that. But if I absolutely need to, I will when I have the time. Sorry for any misunderstanding.