The meathod of forwarding ports is different for every router. It's not a matter of adding a static ip route to the host. What you need to do is add a rule in the NAT table. Some routers/firewalls can do this, some can't. I'm pretty sure any newer D-Link can do this. Just look around in the Web Admin for the router, it shouldn't be to hard to find, they are pretty simple routers.