Peugeot 107 heater blower not working

my heaters have stopped working? checked the fuses and they are ok, i think the element is still working cause if i leave it on and im driving fast you can feel some warmth coming from the vents im assuming its air being drawn in from outside and venting out cause the faster i go the more you can feel it? iv looked on utube and on other cars they say the main problem with this is the heater system has a thermal resistor and its normally this resistor needs changing but i cannot find anything on the 107. any advice on this problem would be appreciated. i.e, where is this thermal resistor or where is the actual blower motor so i can check it?? thanks