Pre registration/Landing Pages Configuration

Hi,

  I Tried to create landing pages in 2 ways:
     1. Create content as
        [   Landing Page
          ${Program.RegisterLink("Register")}

          ${Program.NameAsRegisterLink} ]
 
   2. Gave an external URL where my landing page exists.

I have worked with both the scenarios but none of it works.
 When i click on register link in my email i get message as page not found.
 Can anyone please help me out on this issueRegards,Siddhesh