CR (%0d) and LF (%0a) does not work

Question

Hi
          I am trying to create a demo application for ASP .net C# in which I want to show how we can do log spoofing

for log spoofing  we can use CR (%0d) and LF (%0a) but the issue is these characters are not doing what they should do then are not taking curser to next line to write the text by a unknown user.

       I am using Visual studio 2005. Shall I need to enable some thing in VS or I need to mention in web.config file.

 Can some body suggest me how I can do this.