sharing laptop's USB internet via ethernet to a Router

Hi all, what i am trying is to share my laptop's internet (i.e. USB Modem) through the ethernet port of my laptop to a wifi router, so i can use the internet on my other devices over Wifi.
i tried ICS nd selected Ethernet i.e. to share my internet with ethernet. Connected the router with LAN cable to Laptop's ethernet port. Setup Wifi on router sucessful. Connected my mobile phone on that wifi network and able to access my shared files (Homegroup) but no internet access.
What are the possible reasons for Wifi network not getting internet? IP configuration i suspect.
here are some screenshots of my network adapters:

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