OK, does your ISP provide a wireless router? If so, go with that option.
If your TP router came out of the box, and you followed the instructions, but it still does not route, then something is mangled!
On your wireless router, put the DNS as the router IP address of your ISP, and the secondary DNS as 126.96.36.199!
See if that helps out. I suspect you have not entered the correct DNS. Do not put the one that the ISP uses, use the IP of the ISP router, and it will forward for you!