WD TV Live HD Plus not detecting network

I recently got cable internet and bought a linksys WRT400N and a WD TV live HD plus to watch videos from my computer in my room, on the tv in the living room. It plays videos from a external hd but it’s not recognizing my wireless network. I’ve been able to connect my laptop to the wireless network but not the WD live.

any help?

Thanks

Is your adapter on the supported list?