I have an existing website for a client which uses asp.net c# mainly due to logic for a side menu that was probably made from a template. Recently they experienced unwanted spam from their online form and so we found a solution in google's recaptcha to add in order to further prevent this, so now I have the task to make it work as desired.
I followed the instructions as diligently at http://code.google.com/apis/recaptcha/docs/aspnet.html
and got my source code to work within visual studio on my local workstation and got this example so it had no errors nor warning messages at least. Great, I have helloworldc.aspx (see attached text file though keys are masked for security) and Bin/recaptcha.dll which I thought I could just upload to my web server via ftp, but now when I try to use the same code over on http://www.bhhlegal.com/helloworldc.aspx
it blows some error messages that I don't quite get it.
While I understand in visual studio, just like doing a c#, that I need to add references to necessary dll files such as recaptcha.dll, but I'm lost as to where or what I have to do in my web server's IIS or web.config or something just to make recaptcha.dll available for our intended purposes.
Please advise so I can at least get this done, thanks.