Join Date: May 2002
Location: Toronto, Rogers, 9865 & 8300-eHDD, Sharp LC75N8000U, Denon AVR4310Ci; Sony KDL40W3000, 9865
Service providers do not officially support DVI or HDMI, only component video. It's unlikely Videotron will help you.
If you don't get the message "this TV is not HDCP compliant" and simply get no picture, you have some sort of connection issue.
See the Digital Home FAQ "things to check first" (under help).