That looks like an ebay special I once bought when I didnt know which was which.The one I bought was total junk.I fiddled with it for a while,but came to the conclusion it wasn't worth my time.The DA's people talk about on here are a different animal.I think most have gotten them from:

cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&Item=220451136159&Category= 35990&_trkparms=algo%3DLVI%26its%3DI%26otn%3D2