Normal map help again

[tesher07]

Ok so I just made a basic wall like but the bake for this one also comes out ba. Can anyone explain to me how to fix this?

http://img202.imageshack.us/img202/2865/helpva.jpg


http://img197.imageshack.us/img197/8909/walllight2copy.jpg

[PredatorGSR]

There have been a bunch of threads on this, here's one that covers most of the points.

http://www.polycount.com/forum/showthread.php?t=72713