Project DescriptionSimple Silverlight Captcha.
Requires Visual Studio 2010 Beta 2 and Silverlight 3.

Edit MainPage for your Uri
imgCaptcha.Source = new BitmapImage(new Uri("http://localhost:2918/AntiBotImage.ashx"));
and ServiceReferences.ClientConfig
<endpoint address="http://localhost:2918/CaptchaService.asmx"
binding="basicHttpBinding" bindingConfiguration="CaptchaServiceSoap"
contract="CaptchaServiceReference.CaptchaServiceSoap" name="CaptchaServiceSoap" />