no heaters on 2000 for fiesta ?

ive a 2000 mk5 ford fiesta. ive just bought it as a second car to get back and too work. anyway ive no heaters at all on any setting, ive checked the resistor and fueses there fine. am thinking it could be the motor but ive no idea how to remove this from behind the dash, any help on this or other propable solutions would be welcome. regards ste.