The last driver I found was 71.84 as shown by the compatibility list. But, that doesn't necessarily mean that it would be the best driver.
You would need to get the proper version for either 2k/XP or 98/ME.
You were close Cliff, and it may be that those particular drivers would work better than the actual "latest".
http://www.nvidia.com/object/71.84_g...supported.html