I have tried unsuccessfully to get any information from the Windsor Hams concerning exams or classes. I gave up a while back after trying to contact someone from the Sun Parlour Retirees Amateur Radio Club (SPRARC) from the info on their website:
http://www.qsl.net/sprarc/index2.html
Your best bet is to go to a 'bigger' city when they're having their testing, perhaps London or Kitchener.