I thought others might find this useful. I recently bought a Samsung TV which has internet functionality. Unfortunately, however, the wifi adapter for it is an official Samsung one which costs about £80. My Xbox 360 has the same issue.
I found an excellent solution which was to 'reverse engineer' an old wifi router I had kicking around so that it became a wireless bridge / adapter. What this means is that it effectively becomes a stand alone wifi adapter. You simply plug devices into it using a network cable and they think they're accessing a normal, wired network. To do this, you need to replace the router's firmware (built in software) with a replacement from www.dd-wrt.com
. They support a large number of routers, although these are usually ones without ADSL modems built in.
Some routers already say that they have this function but most will only talk to the same make and model of router and most people don't have two identical routers. I spent hours trying to get mine to work before realising this. Also, most only use old style WEP encryption whereas dd-wrt firmware uses any encryption including WPA2 so your network remains really secure.
There are further instructions about how to do this at http://www.makeuseof.com/tag/how-to-...reless-bridge/
which provides a simple, plain English, guide on how to get it up and running.
If you get stuck feel free to ask for help. I'm not an expert but may have encountered the same 'head scratching' moments as you!