What exactly hardware is the discussion about? Socket 3?
The rules don't require the most recent CPU-Z, they require and adequate one. If it's hardware like s478, there's no need to use the one that has added support for Gulftowns. This is in general. Of course, you should try to use the more recent.
So the answer to your question will be winNT + old CPU-Z + recent Super pi. And Chkcpu would be nice - it's more informative with those old systems. A photo added would be best, because software can't differ some models.
This is my opinion