LAN access using cable modem

[GWINTO]

We have recently installed a cable modem which connects to our server via a router
we can get out ok and I can ping the router from outside (over the internet) but I can't get to our IIS why?
I have posted a diagram of the whole picture because it is too much information to list

http://www.gwinto.co.uk/network

if any body can get this working I am prepared to pay!!!!!!

We wnat to be able to log on to the exchange server both through OWA and outlook across the internet

 

[GWINTO]

Sorted it out, it was a rooter problem