Hello !
I'm using the Captchacontrol descripted in the article "Examining ASP.NET's Membership, Roles, and Profile - Part 5" by Scott Mitchell wich is from the developer site http://www.codeproject.com/KB/custom-controls/CaptchaControl.aspx ... It works very fine in the LoginControl descripted in Scott Mitchell's article ...
Now for better security i put this control in the CreateUserWizard with the same asp.net code ... Have a look at the code below
<%@ Register TagPrefix="cc1" Namespace="WebControlCaptcha" Assembly="WebControlCaptcha" %>
<asp:CreateUserWizard ID="CreateUserWizard1" runat="server" ContinueDestinationPageUrl="~/Default.aspx"
CancelDestinationPageUrl="~/Default ...
Go to the complete details ...