WDTV Live Hub won't connect to network

 hi im new to this forum, and im having the same problem, my WDTV live hub wont recognise my wireless network, it sees it but i cant get it to connect, i ran status check and i got a green tick on the ip address but not the Dns or the other one. So i used an ethernet cable, plugged it directly into my router and its working again. Is there any solution to to get it working wirelessly again? Any help would be apreciated     Thanks