If you have cable or DSL and need your Roku to work on wireless, you can get a wireless router, and place it relatively close to your computer and ISP modem or cable box. Your computer and your ISP modem or cable box will be connected to your wireless router via standard network cables. http://www.mobilefish.com/tutorials/lin ... ation.html
has a tutorial for a LinkSys, but concepts for set up and configuration are similar for most wireless routers. When you configure the wireless router, the following DNS numbers that have to be entered on the router configuration web page Use 188.8.131.52 as Primary and 184.108.40.206 as secondary.
Once your wireless router is set up and configured, a Roku box can detect it, and stream content to your HD TV. The closer the Roku box is to the wireless router, the stronger the wireless connection, the better the performance of the wirelessly-streamed content.