Be sure this is the right adapter.
Next, it's incorrect this connects to your computer. It first connects to your wifi router and then your computer might show up if there is some DLNA server software. It's all a bit complex but let's take it one step at a time.
I have LN52A860 LCD TV and I brought WIS09ABGN WIRELESS LAN ADAPTOR to connect the tv to my computer it is showing nothing.
I dont know it is not supported or what.