PC Anywhere 12.5 Connection to Host Issue due to host are behind router modem + router

First

 

I have bussiness internet by comcast and it come with

 

comcast router modem

- I have one static IP and this go to Web server

- another line go to Cisco WRVS4400N (small bussiness router) this one are dynamic IP and share with all pc in office

 

then one of PC in office install PC Anywhere for staff to login from home but it can't connect from another network at all

connect to each otther by LAN is fine but when it come to out side internet it can't connect host PC

 

then I check on web like  "what is my IP" then I see all PC show it is dynamic IP that all same in each machine

so it look like from internet == > dynamic ip == > pass  router modem and router untilk reach Host PC

 

I try client like no ip.com  are not work either

 

My question is  how I setup Host / Remote so host can be login from internet.

 

in this page are something fimilar but they don't provide how to setup

 

Thank You

 

Paw K.