Currently Rogers doesn't allow tethering to iPads with their tethering plan from an iPhone. But with the impending iOS4.3 release where tethering is built-in, is there a chance we may be able to tether a wifi iPad to the iPhone for 3G?
http://gizmodo.com/5731562/unconfirmed-all-iphones-will-have-personal-hotspot-ability-with-ios-43
Update: Confirmed for the iPhone 4, see post 17
http://gizmodo.com/5731562/unconfirmed-all-iphones-will-have-personal-hotspot-ability-with-ios-43
Update: Confirmed for the iPhone 4, see post 17