Try this little experiment. I tried this with English (US), English (Australian) and English (Canadian). See if you get the same results in Word 2000.
Set the language to English (US) or English (Australian). Type “Familyar” three times. Click on the spell check icon and take the suggestion “Familiar” but click on change all.
Now, change the language to English (Canadian), type “Familyer” three times, go to the spell check and click on change all.
If you get the same results as I did, it changed all three in English (US) and English (Australian), but for English (Canadian), clicking on change all is the equivalent to clicking on change. In other words to actually change all of the wrong spellings, I had to click three times.
If you got the same results, I will be pleased because I will know that I am not alone. If it didn’t happen for you and you can explain why it didn’t, then let me know.
I have only tried this on my home computer, but I am going to try it on another one tomorrow at work.