Host access behind cable modem and wireless router

Hello all,

If someone could direct me to a previous thread on this item I will look there. Two scenarious;

1st - Cable modem into a Netgear wireless router and into the host. The wireless router is passing out dynamic IP's to the clients, but I need to get through the cable modem/internet to reach that dynamic IP. When I am on the wireless network I can get through using the Dyn IP no problem, but once on the internet I cannot get through. Is there a simple answer to this problem? 

2nd - Same situation but using the internet to access through SureWest Wireless Router. The router is giving IP's out but I need to access through the router on the internet in order to get to these Dyn IP's.

Thanks