How to setup my webserver

Hello,
My router ip is 192.168.1.1 and i have dynamic ip i register my username with no-ip and i set port forwarding in router to 192.168.1.2 which is working when put http://192.168.1.2 in my browser its shows my iis7 page.
but while iam trying to access my no-ip user name it displays my router configuration page
what i have to do to access my webserver default page i.e., iis7 page from outside world.
thanks in advance