oh thanks.. I ended up searaching as well after posting here but since I was hearing mixed views from my family(requirement of passport or visa since january 2008 and such) so I thought hearing about a first hand experience might help!!!
Yes I will be visiting TO for the weekend entering via niagara falls!!
and oh by the way,t his is what I found.. seems like US passport and driver’s license should be enough!!
Passport Requirements at the Canada Border - Do Americans Need a Passport to Visit Canada?