Cisco Pix Port Forwarding

Hello I am trying to do the following.  

Asume one static external IP on a pix.  and 3 internal ips

I am hoping for a configuration that will forward requests on that single ip to internal machines by port(done this on so many soho firewalls, im sure cisco must be able to do it!)

SO..

Someone comes in on port 25 they need to be directed to say 10.0.0.1
comes in on port 80 directed to 10.0.0.2
port 110 10.0.0.3

all the same single external IP forwarding to different IPs internally based upon port.

Thanks :)