On Thu, 08 Dec 2011 16:41:33 -0800, Oren wrote:

On Thu, 8 Dec 2011 16:06:21 -0800 (PST), Robert Macy
wrote:

I don't want to find studs, just the nails

Use a rare earth magnet.
Another thing that works is a small metal detector like the
electro-metalalloscop 850.