Adding a WiFi ETHERNET NETWORK CARD ADAPTER TO MY WD TV HD PLUS LIVE, to detect my PC?

I wanted to know that if i can add a Ethernet Networkd card to my WD TV HD LIVE PLUS Device and detec my pc through that way? Rather then hooking it up with a ethernet cable wire?

I have a WIFI router, so would the Ether network card adapter be able to read my home network, so i can start watching videos from my pc, rather then through my external hardrive?

here is the link of the item i would like to get and hook it up to my WD TV LIVE PLUS, wanted to know if it would work?

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=150544416927&ssPageName=STRK:MEWAX:IT

The short answer is YES, but the item you point to isn’t likely to work.    There’s not even a brand name on it.   

You need to read here for the list of supported adapters:  

http://wdc.custhelp.com/cgi-bin/wdc.cfg/php/enduser/std_adp.php?p_faqid=3805