At this point it sounds like you're in good hands TD, but I would seriously recommending having Videotron cancel your account and open a new one with a completely different login (if you're staying with them that is). If you're going to Bell, then you'll automatically get new info, but make your password as ridiculously difficult as possible and take all the steps to lock down your router (WPA-PSK keys, Access lists with only your MAC addresses, etc)
"Make the most of yourself, for that is all there is of you"
Ralph Waldo Emerson
~Those who KNOW better are responsible to TEACH better~
Jenn, Simon and Peaches