It all depends if the router supports modem dialing. There are routers released that are capable of dialing using USB Modems, but most likely if you attach the modem to a WiFi router, it will be seen as USB storage. YOu need to check the manual of your router in order to see if it supports modem dialing through 3G. There is no other way. I have also seen various routers with this capability, but they're limited and available only for certain areas.