pl help can use BB500 or 1000 or not......

my motherboard
Asus  P5QPL-AM
can use bb500 or 1000 ?
use cheap cpu (5 year goods)
or some suggestion just online only
not BT cons bb100 contract renewal
165 x 24 for bb1000 or renewal bb100 151 x24
which is good for me ?
thz ching !!!