asterisk users - Apr 2003 - zaptel error while compiling

i am using RH8.0,when i try to load the zaptel driver using "modprobe
zaptel" it give  an error "cant locate  module zaptel"

also when i do "modprobe wcfxo"
it gives  "can't locate module wcfxo"

when i try compilling  zaptel i get "make ***[zaptel.0] Error 1

what am i doing wrong someone please help!

-- 
 Augustine
GDES
18b oshin road,kongi bodija
p.o.box 29460, secretariate,
ibadan.