Hi,
static (inside,outside) tcp x.x.x.x 80 y.y.y.y 10054 netmask 255.255.255.255
with an
access-list outside_inside exteneded permit tcp any host x.x.x.x eq 80
This should help you. x.x.x.x is your public ip. y.y.y.y is private ip.
HTH
Hoogen
Do rate if this helps :)