|Success!! I now have v71.89 drivers installed on my machine. One key finding - after double-clicking on 71.89_win2kxp_english.exe, the program asks where the extracted files should be saved - use the default path that the program suggests (C:\NVIDIA\Win2KXP\71.89)|
That seems to be the main difference between a good installation and getting the error message that said "... Can't find nv4_mini.sys ..."
I had the anti-virus software turned off the whole time and I don't use a download accelerator. If I try to use my own path for the extracted files, the installer came up with the error message. If I used the nvidia default path, then it worked!
Perhaps there is a better reason for this happening but from what I can tell, the path was the issue.
Thanks again to everyone for your fast responses!!