C# Could not load file or assembly 'Recaptcha

[Chas]

I'm using visual studio 2008 creating a C# project
When I copy
<%@ Register TagPrefix="recaptcha" Namespace="Recaptcha"
Assembly="Recaptcha" %>
to my aspx page I get

Error 38 Could not load file or assembly 'Recaptcha' or one of its
dependencies. The system cannot find the file specified. C:\Users
\charles\Documents\Visual Studio 2008\WebSites\MC4HA\Contact.aspx 2


I have Recaptcha.dll and Recaptch.pdb included in my project. If just
load the sample project it works. What am I missing?
Thanks,
Chas

[Chas]

Oh I got it, Recaptcha.dll and Recaptch.pdb had to be in a
subdirectory called Bin.