WIFI to RJ 45 internet connection

[aknuuti]

I have dish network. To access On Demand requires an internet connection. I have wifi in the house, but the receiver requires a hard line. Is there a way to convert wifi to a RJ 45 connection without using usb to power the adapter?

 

[Emerald]

http://www.newegg.com/Product/Product.aspx?Item=N82E16833124473

 

[fyrye]

You are looking specifically for what they call a wireless bridge. It takes the wireless signal and allows you to connect to it via ethernet (RJ45).
Several makes and models, I prefer this one:
http://www.newegg.com/Product/Product.aspx?Item=N82E16833320112

Always read reviews.