Connecting Wireless router to computer without modem ? HELP?

So i bought an Wireless router (tp-link wr34og) because and i donut have a modem all the wires go all the way thorough my apartment and out of my apartment somewhere.i did configure it properly through the easy setup wizard and it did pass all the tests like checking network status and so on BUT there is no internet on my computer .i can detect the wireless network from my ipod 4 but it dosent connect to the internet as well