Office 2003 problems

I kept a copy of the wsusoffline-9.21 client folder which contains o2k3 and ofc folders with the final update of Office 2003, specifically so I could reinstall and update Office 2003 at a later date. But when I run the 9.21 updateinstaller.exe with W10, it says that "this version of windows is not supported", and when I run the current updateinstaller.exe, it says there are no updates for the installed office product (even though I have 2003 installed and running under W10). So...
1) Is there a way around this using WSUSOU? If not ...
2) Can I just run the .exe files in the o2k3 enu and glb folders?
3) Do i need to also expand and run the .cab files in the ofc enu and glb folders?
4) What is the difference between o2k3 and ofc and between enu and glb?
1) Is there a way around this using WSUSOU? If not ...
2) Can I just run the .exe files in the o2k3 enu and glb folders?
3) Do i need to also expand and run the .cab files in the ofc enu and glb folders?
4) What is the difference between o2k3 and ofc and between enu and glb?