This web site (http://www.allaboutsymbian.com/news/exnews.php?id=6467) explains how to get wifi working on a 3660 and give this link for the download http://www.allaboutsymbian.com/symbianwifi.php but clicking gets the page not available message. How to contact the web master to let him know the link is broken?
WiFi software
That article is from April 1st, 2004 (the, so called, April Fool's Day in many countries/cultures).
In other words, it is a joke.