Queebec’s highway safety code use to prohibit having a television or other screen displaying information that a drivercan directly or indirectly see while driving but changes were suppose to be made at the end of 2007. I dont see if these changes have been made to the code but I can tell you that I've used them in the past and have had no issue...

Also do be careful with cellphones in Quebec (excerpt from Ministry of Transportation website):
Use of a cell phone while driving a vehicle is a source of major distractions, which can cause accidents. This is why any hand-held device with a telephone function, such as a cell phone or a mobile pocket PC (e.g., BlackBerry), will be banned starting April 1, 2008 while driving a vehicle.

An offence will result in a fine of $80 to $100 plus costs and three demerit points for drivers at fault. Over the next three months, offenders will receive a warning, but starting July 1, 2008, peace officers may issue a notice of offence. Use of a hand-free phone is still permitted but is not recommended, because it also represents a risk while driving.