dude....
You need to provide more information on what the problem is before we can help you,
most of these devices you mentioned as far as I know are usually in a form of router+P2P client+usb storage or similar.... they are a pain in the rear and usually not worth the time and effort as they suck compared to a actual client software like uTorrent or Azeureus, not to mention the built in router usually suck, did I mention these things suck?
As for good torrent sites, the best ones are usually private sites or paid sites, sure you can go to some that are free and usually get a 1/1000 seed/peer ratio because the other 999 is just leeching..
ffs... I'm not going to teach you how to steal stuff.. oO"
If you are willing to pay, keyword search "usenet", they are more reliable and have far less restriction, not to mention much faster.