I am trying to create a cookie using the masterpages.  The site that reads the cookie doesn't see it.  They are both in the same domain.  I am creating the cookie in the load event.  The  cookie isn't being created.  Here is my code:

HttpCookie aCookie = new HttpCookie("DDPASecurity");

aCookie.Values["Auth"]="user@domain.com";

aCookie.Domain="domain.com";

aCookie.Expires = DateTime.Now.AddDays(1);